1 files changed, 1 insertions, 1 deletions
diff --git a/parse.y b/parse.y
index bfc8cd9823..0970cc43e9 100644
--- a/parse.y
+++ b/parse.y
@@ -2624,7 +2624,7 @@ primary		: literal
 		| keyword_not '(' rparen
 		    {
 		    /*%%%*/
-			$$ = NEW_LIT(Qtrue);
+			$$ = call_uni_op(cond(NEW_NIL()), '!');
 		    /*%
 			$$ = dispatch2(unary, ripper_intern("not"), Qnil);
 		    %*/