diff --git a/internal/gapicgen/gensnippets/gensnippets.go b/internal/gapicgen/gensnippets/gensnippets.go
index 602d268b969..57af17bf4ab 100644
--- a/internal/gapicgen/gensnippets/gensnippets.go
+++ b/internal/gapicgen/gensnippets/gensnippets.go
@@ -268,4 +268,6 @@ const licenseHeader string = `// Copyright %v Google LLC
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// Code generated by cloud.google.com/go/internal/gapicgen/gensnippets. DO NOT EDIT.
+
 `