diff --git a/src/encoding/gob/encoder.go b/src/encoding/gob/encoder.go
index aa413939d46..16b65bf7d49 100644
--- a/src/encoding/gob/encoder.go
+++ b/src/encoding/gob/encoder.go
@@ -39,7 +39,7 @@ func NewEncoder(w io.Writer) *Encoder {
 	return enc
 }
 
-// writer() returns the innermost writer the encoder is using
+// writer returns the innermost writer the encoder is using.
 func (enc *Encoder) writer() io.Writer {
 	return enc.w[len(enc.w)-1]
 }