diff --git a/ppc64/ppc64asm/tables.go b/ppc64/ppc64asm/tables.go
index d42ab0f..9e3b26f 100644
--- a/ppc64/ppc64asm/tables.go
+++ b/ppc64/ppc64asm/tables.go
@@ -1,5 +1,4 @@
-// DO NOT EDIT
-// generated by: ppc64map -fmt=decoder ../pp64.csv
+// Code generated by ppc64map -fmt=decoder pp64.csv DO NOT EDIT.
 
 package ppc64asm
 
diff --git a/ppc64/ppc64map/map.go b/ppc64/ppc64map/map.go
index 0acad44..8d34553 100644
--- a/ppc64/ppc64map/map.go
+++ b/ppc64/ppc64map/map.go
@@ -704,8 +704,7 @@
 func printDecoder(p *Prog) {
 	var buf bytes.Buffer
 
-	fmt.Fprintf(&buf, "// DO NOT EDIT\n")
-	fmt.Fprintf(&buf, "// generated by: ppc64map -fmt=decoder %s\n", inputFile)
+	fmt.Fprintf(&buf, "// Code generated by ppc64map -fmt=decoder %s DO NOT EDIT.\n", inputFile)
 	fmt.Fprintf(&buf, "\n")
 
 	fmt.Fprintf(&buf, "package ppc64asm\n\n")
diff --git a/x86/x86asm/tables.go b/x86/x86asm/tables.go
index af3fb73..6f57c70 100644
--- a/x86/x86asm/tables.go
+++ b/x86/x86asm/tables.go
@@ -1,5 +1,4 @@
-// DO NOT EDIT
-// generated by: x86map -fmt=decoder ../x86.csv
+// Code generated by x86map -fmt=decoder x86.csv DO NOT EDIT.
 
 package x86asm
 
diff --git a/x86/x86map/map.go b/x86/x86map/map.go
index 4f64c0c..df8c68e 100644
--- a/x86/x86map/map.go
+++ b/x86/x86map/map.go
@@ -665,8 +665,7 @@
 		"PAUSE": true,
 	}
 	printDecoderPass(p, 1, false, opMap)
-	fmt.Printf("// DO NOT EDIT\n")
-	fmt.Printf("// generated by: x86map -fmt=decoder %s\n", inputFile)
+	fmt.Printf("// Code generated by x86map -fmt=decoder %s DO NOT EDIT.\n", inputFile)
 	fmt.Printf("\n")
 	fmt.Printf("package x86asm\n\n")
 	fmt.Printf("var decoder = [...]uint16{\n\tuint16(xFail),\n")