diff --git a/drivers/staging/r8188eu/core/rtw_security.c b/drivers/staging/r8188eu/core/rtw_security.c
index 7861dfa235c0..b73aea8a7fb5 100644
--- a/drivers/staging/r8188eu/core/rtw_security.c
+++ b/drivers/staging/r8188eu/core/rtw_security.c
@@ -1144,7 +1144,7 @@ u32 rtw_aes_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe)
 	return res;
 }
 
-static int aes_decipher(struct adapter *padapter, u8 *key, uint hdrlen,
+static int aes_decipher(u8 *key, uint hdrlen,
 			u8 *pframe, uint plen)
 {
 	static u8	message[MAX_MSG_SIZE];
@@ -1365,7 +1365,7 @@ u32 rtw_aes_decrypt(struct adapter *padapter, struct recv_frame *precvframe)
 				prwskey = &stainfo->dot118021x_UncstKey.skey[0];
 			}
 			length = precvframe->len - prxattrib->hdrlen - prxattrib->iv_len;
-			res = aes_decipher(padapter, prwskey, prxattrib->hdrlen, pframe, length);
+			res = aes_decipher(prwskey, prxattrib->hdrlen, pframe, length);
 		} else {
 			res = _FAIL;
 		}