diff --git a/rules/clash/Wifi_Call_UK.yaml b/rules/clash/Wifi_Call_UK.yaml
index 21bc7ad..81a88c8 100644
--- a/rules/clash/Wifi_Call_UK.yaml
+++ b/rules/clash/Wifi_Call_UK.yaml
@@ -18,3 +18,4 @@ payload:
   - IP-CIDR,46.68.0.0/17
   # Giffgaff
   - IP-CIDR,87.194.0.0/16
+  - DOMAIN-SUFFIX,3gppnetwork.org