1 files changed, 7 insertions, 0 deletions
diff --git a/python/google/protobuf/internal/factory_test2.proto b/python/google/protobuf/internal/factory_test2.proto
index 27feb6ce..bb1b54ad 100644
--- a/python/google/protobuf/internal/factory_test2.proto
+++ b/python/google/protobuf/internal/factory_test2.proto
@@ -30,6 +30,7 @@
 
 // Author: matthewtoia@google.com (Matt Toia)
 
+syntax = "proto2";
 
 package google.protobuf.python.internal;
 
@@ -87,6 +88,12 @@ message LoopMessage {
   optional Factory2Message loop = 1;
 }
 
+message MessageWithNestedEnumOnly {
+  enum NestedEnum {
+    NESTED_MESSAGE_ENUM_0 = 0;
+  }
+}
+
 extend Factory1Message {
   optional string another_field = 1002;
 }