diff --git a/bazel/generate_cc.bzl b/bazel/generate_cc.bzl
index 021cb8a9affc5..1a1fe54c3fccd 100644
--- a/bazel/generate_cc.bzl
+++ b/bazel/generate_cc.bzl
@@ -170,7 +170,7 @@ def generate_cc_impl(ctx):
         executable = ctx.executable._protoc,
         arguments = arguments,
         use_default_shell_env = True,
-        execution_requirements = execution_requirements
+        execution_requirements = execution_requirements,
     )
 
     # Create symlinks from _virtual_imports to _virtual_includes for headers.