diff --git a/src/quickfix.c b/src/quickfix.c
index b2dabaa..c3b28e4 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -1177,8 +1177,7 @@
     int		    status;
 
     /* Do not used the cached buffer, it may have been wiped out. */
-    vim_free(qf_last_bufname);
-    qf_last_bufname = NULL;
+    VIM_CLEAR(qf_last_bufname);
 
     vim_memset(&state, 0, sizeof(state));
     vim_memset(&fields, 0, sizeof(fields));
@@ -1229,8 +1228,7 @@
     if (last_efm == NULL || (STRCMP(last_efm, efm) != 0))
     {
 	/* free the previously parsed data */
-	vim_free(last_efm);
-	last_efm = NULL;
+	VIM_CLEAR(last_efm);
 	free_efm_list(&fmt_first);
 
 	/* parse the current 'efm' */
@@ -1351,8 +1349,7 @@
     static void
 qf_store_title(qf_info_T *qi, int qf_idx, char_u *title)
 {
-    vim_free(qi->qf_lists[qf_idx].qf_title);
-    qi->qf_lists[qf_idx].qf_title = NULL;
+    VIM_CLEAR(qi->qf_lists[qf_idx].qf_title);
 
     if (title != NULL)
     {
@@ -3003,8 +3000,7 @@
 
     qf_free_items(qi, idx);
 
-    vim_free(qfl->qf_title);
-    qfl->qf_title = NULL;
+    VIM_CLEAR(qfl->qf_title);
     free_tv(qfl->qf_ctx);
     qfl->qf_ctx = NULL;
     qfl->qf_id = 0;