diff --git a/core/rtw_ieee80211.c b/core/rtw_ieee80211.c
index 92f029a..12e230e 100644
--- a/core/rtw_ieee80211.c
+++ b/core/rtw_ieee80211.c
@@ -21,7 +21,6 @@
 
 
 u8 RTW_WPA_OUI_TYPE[] = { 0x00, 0x50, 0xf2, 1 };
-u16 RTW_WPA_VERSION = 1;
 u8 WPA_AUTH_KEY_MGMT_NONE[] = { 0x00, 0x50, 0xf2, 0 };
 u8 WPA_AUTH_KEY_MGMT_UNSPEC_802_1X[] = { 0x00, 0x50, 0xf2, 1 };
 u8 WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X[] = { 0x00, 0x50, 0xf2, 2 };
diff --git a/include/ieee80211.h b/include/ieee80211.h
index dacb471..ed317f4 100644
--- a/include/ieee80211.h
+++ b/include/ieee80211.h
@@ -110,7 +110,6 @@ enum {
 
 #define WPA_SELECTOR_LEN 4
 extern u8 RTW_WPA_OUI_TYPE[] ;
-extern u16 RTW_WPA_VERSION ;
 extern u8 WPA_AUTH_KEY_MGMT_NONE[];
 extern u8 WPA_AUTH_KEY_MGMT_UNSPEC_802_1X[];
 extern u8 WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X[];