diff --git a/plat/mediatek/include/lpm/mt_lp_rm.h b/plat/mediatek/include/lpm/mt_lp_rm.h
index bda3ba1..ce7e520 100644
--- a/plat/mediatek/include/lpm/mt_lp_rm.h
+++ b/plat/mediatek/include/lpm/mt_lp_rm.h
@@ -49,7 +49,7 @@
 };
 
 struct mt_resource_manager {
-	int (*update)(struct mt_resource_constraint **con,
+	int (*update)(struct mt_resource_constraint **con, unsigned int num,
 		      int stateid, void *priv);
 	struct mt_resource_constraint **consts;
 };