diff --git a/src/popupwin.c b/src/popupwin.c
index d144be7..3461313 100644
--- a/src/popupwin.c
+++ b/src/popupwin.c
@@ -384,7 +384,7 @@
 
     vim_snprintf((char *)cbbuf, sizeof(cbbuf),
 				       "{_ -> popup_close(%d)}", wp->w_id);
-    if (get_lambda_tv(&ptr, &tv, TRUE) == OK)
+    if (get_lambda_tv(&ptr, &tv, &EVALARG_EVALUATE) == OK)
     {
 	wp->w_popup_timer = create_timer(time, 0);
 	wp->w_popup_timer->tr_callback = get_callback(&tv);