diff --git a/drivers/staging/rtl8723bs/core/rtw_security.c b/drivers/staging/rtl8723bs/core/rtw_security.c
index 979056c3d397..57cfe06d7d73 100644
--- a/drivers/staging/rtl8723bs/core/rtw_security.c
+++ b/drivers/staging/rtl8723bs/core/rtw_security.c
@@ -2290,8 +2290,7 @@ static void gf_mulx(u8 *pad)
 
 static void aes_encrypt_deinit(void *ctx)
 {
-	memset(ctx, 0, AES_PRIV_SIZE);
-	kfree(ctx);
+	kzfree(ctx);
 }