diff --git a/libraries/AP_Networking/AP_Networking_Config.h b/libraries/AP_Networking/AP_Networking_Config.h
index c55ef50624..b6aa08af30 100644
--- a/libraries/AP_Networking/AP_Networking_Config.h
+++ b/libraries/AP_Networking/AP_Networking_Config.h
@@ -33,7 +33,7 @@
 #endif
 
 #ifndef AP_NETWORKING_BACKEND_PPP
-#define AP_NETWORKING_BACKEND_PPP (AP_NETWORKING_BACKEND_DEFAULT_ENABLED)
+#define AP_NETWORKING_BACKEND_PPP 0
 #endif
 
 #ifndef AP_NETWORKING_BACKEND_SITL