diff --git a/core/rtw_br_ext.c b/core/rtw_br_ext.c
index 610886d..c80474e 100644
--- a/core/rtw_br_ext.c
+++ b/core/rtw_br_ext.c
@@ -137,9 +137,13 @@ static __inline__ int __nat25_add_pppoe_tag(struct sk_buff *skb, struct pppoe_ta
 	/* have a room for new tag */
 	memmove(((unsigned char *)ph->tag + data_len), (unsigned char *)ph->tag, ntohs(ph->length));
 	ph->length = htons(ntohs(ph->length) + data_len);
-#pragma GCC diagnostic ignored "-Wstringop-overread"
+#if (defined __GNUC__) && (__GNUC__ > 10)
+    #pragma GCC diagnostic ignored "-Wstringop-overread"
+#endif
 	memcpy((unsigned char *)ph->tag, tag, data_len);
-#pragma GCC diagnostic pop
+#if (defined __GNUC__) && (__GNUC__ > 10)
+    #pragma GCC diagnostic pop
+#endif
 	return data_len;
 }