diff --git a/src/compress/gzip/gzip_test.go b/src/compress/gzip/gzip_test.go
index 12c8e182078..5aeb2e2675d 100644
--- a/src/compress/gzip/gzip_test.go
+++ b/src/compress/gzip/gzip_test.go
@@ -200,6 +200,11 @@ func TestWriterFlush(t *testing.T) {
 	if n2 == n3 {
 		t.Fatal("Flush didn't flush any data")
 	}
+
+	if err := w.Close(); err != nil {
+		t.Fatal(err)
+	}
+
 }
 
 // Multiple gzip files concatenated form a valid gzip file.