diff --git a/core/rtw_recv.c b/core/rtw_recv.c
index 9b5707c..3dd146b 100644
--- a/core/rtw_recv.c
+++ b/core/rtw_recv.c
@@ -2695,6 +2695,10 @@ union recv_frame *recvframe_defrag(_adapter *adapter, _queue *defrag_q)
 	plist = get_next(phead);
 	prframe = LIST_CONTAINOR(plist, union recv_frame, u);
 	pfhdr = &prframe->u.hdr;
+	if (!pfhdr) {
+		pr_err("pfhdr NULL in %s\n", __func__);
+		return NULL;
+	}
 	rtw_list_delete(&(prframe->u.list));
 
 	if (curfragnum != pfhdr->attrib.frag_num) {