diff --git a/drivers/staging/rtl8188eu/include/rtw_mlme_ext.h b/drivers/staging/rtl8188eu/include/rtw_mlme_ext.h
index 3e8a0ab46ff2..38911a7daa95 100644
--- a/drivers/staging/rtl8188eu/include/rtw_mlme_ext.h
+++ b/drivers/staging/rtl8188eu/include/rtw_mlme_ext.h
@@ -238,7 +238,7 @@ struct mlme_handler {
 
 struct action_handler {
 	unsigned int   num;
-	char *str;
+	const char *str;
 	unsigned int (*func)(struct adapter *adapt, struct recv_frame *frame);
 };