diff --git a/include/dbus.h b/include/dbus.h
index d988760e..d9597541 100644
--- a/include/dbus.h
+++ b/include/dbus.h
@@ -49,6 +49,8 @@ extern "C" {
 #define OFONO_VOICECALL_MANAGER_INTERFACE "org.ofono.VoiceCallManager"
 #define OFONO_DATA_CONNECTION_MANAGER_INTERFACE "org.ofono.DataConnectionManager"
 #define OFONO_DATA_CONTEXT_INTERFACE "org.ofono.PrimaryDataContext"
+#define OFONO_STK_INTERFACE OFONO_SERVICE ".SimToolkit"
+#define OFONO_SIM_APP_INTERFACE OFONO_SERVICE ".SimApplicationAgent"
 
 /* Essentially a{sv} */
 #define OFONO_PROPERTIES_ARRAY_SIGNATURE DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING \