diff --git a/source4/nbt_server/wins/winsserver.h b/source4/nbt_server/wins/winsserver.h
index 9f035572376..803a9e269d4 100644
--- a/source4/nbt_server/wins/winsserver.h
+++ b/source4/nbt_server/wins/winsserver.h
@@ -63,4 +63,5 @@ struct wins_challenge_io {
 	} out;
 };
 
+struct composite_context;
 #include "nbt_server/wins/winsserver_proto.h"