diff --git a/core/generator/generator.factor b/core/generator/generator.factor
index 4d985ff164..0e499cf90f 100755
--- a/core/generator/generator.factor
+++ b/core/generator/generator.factor
@@ -20,6 +20,7 @@ SYMBOL: compiled
     {
         { [ dup compiled get key? ] [ drop ] }
         { [ dup primitive? ] [ drop ] }
+        { [ dup deferred? ] [ drop ] }
         { [ t ] [ dup compile-queue get set-at ] }
     } cond ;