diff --git a/airoha/an7581/UNION_AN7581_KITE_LOGAN_KERNEL_5_4_demo.mak b/airoha/an7581/UNION_AN7581_KITE_LOGAN_KERNEL_5_4_demo.mak
index 13297475c6e55473c9d584610dc133458f96b8b9..dbde2ab95874147b2a8da03a0b8f3555f14412f4 100644
--- a/airoha/an7581/UNION_AN7581_KITE_LOGAN_KERNEL_5_4_demo.mak
+++ b/airoha/an7581/UNION_AN7581_KITE_LOGAN_KERNEL_5_4_demo.mak
@@ -356,6 +356,7 @@ TCSUPPORT_ACTIVE_ETHERNET_WAN=y
 TCSUPPORT_HSGMII_LAN=y
 TCSUPPORT_ETHER_8811=y
 TCSUPPORT_VOIP=y
+TCSUPPORT_VOIP_SRTP=y
 TCSUPPORT_ECN_SIP=y
 TCSUPPORT_ECN_MEGACO=y
 VOIP_MAX_CHAN=2