diff --git a/src/dbus.h b/src/dbus.h
index 93055bf6..f98ade7a 100644
--- a/src/dbus.h
+++ b/src/dbus.h
@@ -40,6 +40,7 @@
 #define IWD_P2P_SERVICE_MANAGER_INTERFACE "net.connman.iwd.p2p.ServiceManager"
 #define IWD_P2P_WFD_INTERFACE "net.connman.iwd.p2p.Display"
 #define IWD_STATION_DIAGNOSTIC_INTERFACE "net.connman.iwd.StationDiagnostic"
+#define IWD_AP_DIAGNOSTIC_INTERFACE "net.connman.iwd.AccessPointDiagnostic"
 
 #define IWD_BASE_PATH "/net/connman/iwd"
 #define IWD_AGENT_MANAGER_PATH IWD_BASE_PATH