diff --git a/cmd/protoc-gen-go-grpc/testdata/gen_test.go b/cmd/protoc-gen-go-grpc/testdata/gen_test.go
index 80b3ba9..71188b0 100644
--- a/cmd/protoc-gen-go-grpc/testdata/gen_test.go
+++ b/cmd/protoc-gen-go-grpc/testdata/gen_test.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/cmd/protoc-gen-go/testdata/gen_test.go b/cmd/protoc-gen-go/testdata/gen_test.go
index a372bd4..fa41156 100644
--- a/cmd/protoc-gen-go/testdata/gen_test.go
+++ b/cmd/protoc-gen-go/testdata/gen_test.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/cmd/protoc-gen-go/testdata/registry_test.go b/cmd/protoc-gen-go/testdata/registry_test.go
index 140b4aa..aca9036 100644
--- a/cmd/protoc-gen-go/testdata/registry_test.go
+++ b/cmd/protoc-gen-go/testdata/registry_test.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package main
diff --git a/internal/encoding/messageset/messageset.go b/internal/encoding/messageset/messageset.go
index 9d22dd7..55526cf 100644
--- a/internal/encoding/messageset/messageset.go
+++ b/internal/encoding/messageset/messageset.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Package messageset encodes and decodes the obsolete MessageSet wire format.
diff --git a/internal/fieldnum/any_gen.go b/internal/fieldnum/any_gen.go
index 7bab555..74c5fef 100644
--- a/internal/fieldnum/any_gen.go
+++ b/internal/fieldnum/any_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/internal/fieldnum/api_gen.go b/internal/fieldnum/api_gen.go
index 6014c86..9a6b5f2 100644
--- a/internal/fieldnum/api_gen.go
+++ b/internal/fieldnum/api_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/internal/fieldnum/descriptor_gen.go b/internal/fieldnum/descriptor_gen.go
index ab6753d..1629515 100644
--- a/internal/fieldnum/descriptor_gen.go
+++ b/internal/fieldnum/descriptor_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/internal/fieldnum/duration_gen.go b/internal/fieldnum/duration_gen.go
index 25b9dd5..8816c73 100644
--- a/internal/fieldnum/duration_gen.go
+++ b/internal/fieldnum/duration_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/internal/fieldnum/empty_gen.go b/internal/fieldnum/empty_gen.go
index 8dca214..b5130a6 100644
--- a/internal/fieldnum/empty_gen.go
+++ b/internal/fieldnum/empty_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/internal/fieldnum/field_mask_gen.go b/internal/fieldnum/field_mask_gen.go
index 10c724a..7e3bfa2 100644
--- a/internal/fieldnum/field_mask_gen.go
+++ b/internal/fieldnum/field_mask_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/internal/fieldnum/source_context_gen.go b/internal/fieldnum/source_context_gen.go
index 428c79b..241972b 100644
--- a/internal/fieldnum/source_context_gen.go
+++ b/internal/fieldnum/source_context_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/internal/fieldnum/struct_gen.go b/internal/fieldnum/struct_gen.go
index 7db1a75..c460aab 100644
--- a/internal/fieldnum/struct_gen.go
+++ b/internal/fieldnum/struct_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/internal/fieldnum/timestamp_gen.go b/internal/fieldnum/timestamp_gen.go
index a808185..b4346fb 100644
--- a/internal/fieldnum/timestamp_gen.go
+++ b/internal/fieldnum/timestamp_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/internal/fieldnum/type_gen.go b/internal/fieldnum/type_gen.go
index ce85d04..b392e95 100644
--- a/internal/fieldnum/type_gen.go
+++ b/internal/fieldnum/type_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/internal/fieldnum/wrappers_gen.go b/internal/fieldnum/wrappers_gen.go
index 6882713..42f846a 100644
--- a/internal/fieldnum/wrappers_gen.go
+++ b/internal/fieldnum/wrappers_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-protos. DO NOT EDIT.
diff --git a/internal/filedesc/desc_list_gen.go b/internal/filedesc/desc_list_gen.go
index d875920..6a8825e 100644
--- a/internal/filedesc/desc_list_gen.go
+++ b/internal/filedesc/desc_list_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-types. DO NOT EDIT.
diff --git a/internal/impl/codec_gen.go b/internal/impl/codec_gen.go
index fac941a..6036b66 100644
--- a/internal/impl/codec_gen.go
+++ b/internal/impl/codec_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-types. DO NOT EDIT.
diff --git a/internal/impl/codec_messageset.go b/internal/impl/codec_messageset.go
index 2c09c79..432cb49 100644
--- a/internal/impl/codec_messageset.go
+++ b/internal/impl/codec_messageset.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package impl
diff --git a/internal/impl/merge_gen.go b/internal/impl/merge_gen.go
index 90a1323..8816c27 100644
--- a/internal/impl/merge_gen.go
+++ b/internal/impl/merge_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-types. DO NOT EDIT.
diff --git a/internal/impl/message_reflect_gen.go b/internal/impl/message_reflect_gen.go
index 94bc88c..7d65f5c 100644
--- a/internal/impl/message_reflect_gen.go
+++ b/internal/impl/message_reflect_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-types. DO NOT EDIT.
diff --git a/proto/decode.go b/proto/decode.go
index 717c979..14afa29 100644
--- a/proto/decode.go
+++ b/proto/decode.go
@@ -1,5 +1,5 @@
 // Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto
diff --git a/proto/decode_gen.go b/proto/decode_gen.go
index c40c01d..b850fb4 100644
--- a/proto/decode_gen.go
+++ b/proto/decode_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-types. DO NOT EDIT.
diff --git a/proto/decode_test.go b/proto/decode_test.go
index 3b8a092..9cfe395 100644
--- a/proto/decode_test.go
+++ b/proto/decode_test.go
@@ -1,5 +1,5 @@
 // Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto_test
diff --git a/proto/encode_gen.go b/proto/encode_gen.go
index 77b6511..1b54088 100644
--- a/proto/encode_gen.go
+++ b/proto/encode_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-types. DO NOT EDIT.
diff --git a/proto/extension.go b/proto/extension.go
index b89413b..73f2431 100644
--- a/proto/extension.go
+++ b/proto/extension.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto
diff --git a/proto/extension_test.go b/proto/extension_test.go
index 622818c..b434206 100644
--- a/proto/extension_test.go
+++ b/proto/extension_test.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto_test
diff --git a/proto/isinit.go b/proto/isinit.go
index 98494f1..c6cde59 100644
--- a/proto/isinit.go
+++ b/proto/isinit.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto
diff --git a/proto/isinit_test.go b/proto/isinit_test.go
index e38b76d..8d8b1b6 100644
--- a/proto/isinit_test.go
+++ b/proto/isinit_test.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto_test
diff --git a/proto/messageset.go b/proto/messageset.go
index f9af2ad..6d0a0c2 100644
--- a/proto/messageset.go
+++ b/proto/messageset.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto
diff --git a/proto/messageset_test.go b/proto/messageset_test.go
index c901800..ff41342 100644
--- a/proto/messageset_test.go
+++ b/proto/messageset_test.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto_test
diff --git a/proto/noenforceutf8_test.go b/proto/noenforceutf8_test.go
index 94ace8c..f41b35a 100644
--- a/proto/noenforceutf8_test.go
+++ b/proto/noenforceutf8_test.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto_test
diff --git a/proto/reset.go b/proto/reset.go
index 11eecfe..57bbc3a 100644
--- a/proto/reset.go
+++ b/proto/reset.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto
diff --git a/proto/reset_test.go b/proto/reset_test.go
index 11f1957..0048b56 100644
--- a/proto/reset_test.go
+++ b/proto/reset_test.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto_test
diff --git a/proto/size_gen.go b/proto/size_gen.go
index 2159592..576e2c6 100644
--- a/proto/size_gen.go
+++ b/proto/size_gen.go
@@ -1,5 +1,5 @@
 // Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Code generated by generate-types. DO NOT EDIT.
diff --git a/proto/testmessages_test.go b/proto/testmessages_test.go
index cfa3cd7..b0f568f 100644
--- a/proto/testmessages_test.go
+++ b/proto/testmessages_test.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto_test
diff --git a/proto/validate_test.go b/proto/validate_test.go
index 30e1fe5..e806998 100644
--- a/proto/validate_test.go
+++ b/proto/validate_test.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto_test
diff --git a/proto/weak_test.go b/proto/weak_test.go
index 0b582ba..bbb1c8d 100644
--- a/proto/weak_test.go
+++ b/proto/weak_test.go
@@ -1,5 +1,5 @@
 // Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style.
+// Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package proto_test