diff --git a/src/frontend/inpcom.c b/src/frontend/inpcom.c
index b80a05d99..e516cf3d5 100644
--- a/src/frontend/inpcom.c
+++ b/src/frontend/inpcom.c
@@ -5640,8 +5640,6 @@ inp_modify_exp(char* expr)
 
     new_str = wl_flatten(wlist);
     wl_free(wlist);
-    wlist = NULL;
-    wl = NULL;
     return(new_str);
 }