diff --git a/drivers/staging/r8188eu/core/rtw_mlme_ext.c b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
index a3cfab2627d5..5e1e2970ccd9 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme_ext.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
@@ -447,7 +447,7 @@ Following are the callback functions for each subtype of the management frames
 
 *****************************************************************************/
 
-unsigned int OnProbeReq(struct adapter *padapter, struct recv_frame *precv_frame)
+static unsigned int OnProbeReq(struct adapter *padapter, struct recv_frame *precv_frame)
 {
 	unsigned int	ielen;
 	unsigned char	*p;
diff --git a/drivers/staging/r8188eu/include/rtw_mlme_ext.h b/drivers/staging/r8188eu/include/rtw_mlme_ext.h
index c2b1aa2f378b..b24aae8108b6 100644
--- a/drivers/staging/r8188eu/include/rtw_mlme_ext.h
+++ b/drivers/staging/r8188eu/include/rtw_mlme_ext.h
@@ -536,8 +536,6 @@ void start_clnt_auth(struct adapter *padapter);
 void start_clnt_join(struct adapter *padapter);
 void start_create_ibss(struct adapter *padapter);
 
-unsigned int OnProbeReq(struct adapter *padapter,
-			struct recv_frame *precv_frame);
 unsigned int OnProbeRsp(struct adapter *padapter,
 			struct recv_frame *precv_frame);
 unsigned int OnBeacon(struct adapter *padapter,