diff --git a/plat/mediatek/mt8192/include/plat_sip_calls.h b/plat/mediatek/mt8192/include/plat_sip_calls.h
index f68a4ea..fdc7bea 100644
--- a/plat/mediatek/mt8192/include/plat_sip_calls.h
+++ b/plat/mediatek/mt8192/include/plat_sip_calls.h
@@ -10,10 +10,6 @@
 /*******************************************************************************
  * Plat SiP function constants
  ******************************************************************************/
-#define MTK_PLAT_SIP_NUM_CALLS    2
-
-/* DFD */
-#define MTK_SIP_KERNEL_DFD_AARCH32		0x82000205
-#define MTK_SIP_KERNEL_DFD_AARCH64		0xC2000205
+#define MTK_PLAT_SIP_NUM_CALLS    (4)
 
 #endif /* PLAT_SIP_CALLS_H */