diff --git a/panda/src/ffmpeg/ffmpegAudio.h b/panda/src/ffmpeg/ffmpegAudio.h
index 6559f59ff5..fe22f93c23 100644
--- a/panda/src/ffmpeg/ffmpegAudio.h
+++ b/panda/src/ffmpeg/ffmpegAudio.h
@@ -38,7 +38,7 @@ public:
     return _type_handle;
   }
   static void init_type() {
-    TypedWritableReferenceCount::init_type();
+    MovieAudio::init_type();
     register_type(_type_handle, "FfmpegAudio",
                   MovieAudio::get_class_type());
   }