diff --git a/src/vim9instr.c b/src/vim9instr.c
index 48b22a6..5057297 100644
--- a/src/vim9instr.c
+++ b/src/vim9instr.c
@@ -2030,7 +2030,7 @@
 	case ISN_NEWFUNC:
 	    {
 		char_u  *lambda = isn->isn_arg.newfunc.nf_lambda;
-		ufunc_T *ufunc = find_func_even_dead(lambda, TRUE, NULL);
+		ufunc_T *ufunc = find_func_even_dead(lambda, TRUE);
 
 		if (ufunc != NULL)
 		{