diff --git a/src/fdrs_gateway_wifi.h b/src/fdrs_gateway_wifi.h
index 3f7d91c..281db9c 100644
--- a/src/fdrs_gateway_wifi.h
+++ b/src/fdrs_gateway_wifi.h
@@ -51,7 +51,7 @@
 
 // select Subnet Address
 #if defined(SUBNET_ADDRESS)
-#define FDRS_SUBNET_ADDRESS GW_IPADDRESS
+#define FDRS_SUBNET_ADDRESS SUBNET_ADDRESS
 #elif defined(GLOBAL_SUBNET_ADDRESS)
 #define FDRS_SUBNET_ADDRESS GLOBAL_SUBNET_ADDRESS
 #else