1 files changed, 1 insertions, 1 deletions
diff --git a/include/grpc++/alarm.h b/include/grpc++/alarm.h
index 2d88d868e5..b43425e224 100644
--- a/include/grpc++/alarm.h
+++ b/include/grpc++/alarm.h
@@ -92,7 +92,7 @@ class Alarm : private GrpcLibraryCodegen {
   }
 
  private:
-  class AlarmEntry : public CompletionQueueTag {
+  class AlarmEntry : public internal::CompletionQueueTag {
    public:
     AlarmEntry(void* tag) : tag_(tag) {}
     void Set(void* tag) { tag_ = tag; }