diff --git a/gql_graph.go b/gql_graph.go
index 0edec52..ca42dee 100644
--- a/gql_graph.go
+++ b/gql_graph.go
@@ -181,6 +181,7 @@ func GQLInterfaceLockable() *graphql.Interface {
         if p_type.Implements(*lockable_type) {
           return GQLTypeBaseLockable()
         }
+        ctx.Log.Logf("gql", "LOCKABLE_RESOLVE_DEFAULT")
         return nil
       },
       Fields: graphql.Fields{},