diff --git a/core/rtw_ieee80211.c b/core/rtw_ieee80211.c
index 808d940..efc84d7 100644
--- a/core/rtw_ieee80211.c
+++ b/core/rtw_ieee80211.c
@@ -747,6 +747,7 @@ u8 *rtw_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
 	uint cnt;
 	u8 *wpsie_ptr = NULL;
 	u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
+	int loop = 0;
 
 	if (wps_ielen)
 		*wps_ielen = 0;
@@ -774,6 +775,8 @@ u8 *rtw_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen)
 		} else {
 			cnt += in_ie[cnt+1]+2; /* goto next */
 		}
+		if (++loop > 1000)
+			return NULL;
 	}
 	return wpsie_ptr;
 }