diff --git a/interop/client/client.go b/interop/client/client.go
index ddc807e..deb9c3d 100644
--- a/interop/client/client.go
+++ b/interop/client/client.go
@@ -73,7 +73,7 @@
         cancel_after_first_response: cancellation after receiving 1st message from the server.`)
 
 	// The test CA root cert file
-	testCAFile  = "testdata/ca.pem"
+	testCAFile = "testdata/ca.pem"
 )
 
 func main() {
diff --git a/interop/test_utils.go b/interop/test_utils.go
index c8a8c9f..1a49a5e 100644
--- a/interop/test_utils.go
+++ b/interop/test_utils.go
@@ -242,7 +242,7 @@
 	grpclog.Println("Emptystream done")
 }
 
-// DoTimeoutSleepingServer performs an RPC on a sleep server which causes RPC timeout. 
+// DoTimeoutSleepingServer performs an RPC on a sleep server which causes RPC timeout.
 func DoTimeoutOnSleepingServer(tc testpb.TestServiceClient) {
 	ctx, _ := context.WithTimeout(context.Background(), 1*time.Millisecond)
 	stream, err := tc.FullDuplexCall(ctx)
@@ -600,4 +600,3 @@
 	}
 	return nil
 }
-