diff --git a/src/compress/gzip/gzip.go b/src/compress/gzip/gzip.go
index aafb442a667..0cc44c59e0f 100644
--- a/src/compress/gzip/gzip.go
+++ b/src/compress/gzip/gzip.go
@@ -222,8 +222,9 @@ func (z *Writer) Flush() error {
 	return z.err
 }
 
-// Close closes the Writer, flushing any unwritten data to the underlying
-// io.Writer, but does not close the underlying io.Writer.
+// Close closes the Writer by flushing any unwritten data to the underlying
+// io.Writer and writing the GZIP footer.
+// It does not close the underlying io.Writer.
 func (z *Writer) Close() error {
 	if z.err != nil {
 		return z.err