diff --git a/include/dbus.h b/include/dbus.h
index 44faa7f5..e7ccb0b4 100644
--- a/include/dbus.h
+++ b/include/dbus.h
@@ -59,6 +59,7 @@ extern "C" {
 #define OFONO_GNSS_INTERFACE "org.ofono.AssistedSatelliteNavigation"
 #define OFONO_GNSS_POSR_AGENT_INTERFACE "org.ofono.PositioningRequestAgent"
 #define OFONO_HANDSFREE_INTERFACE OFONO_SERVICE ".Handsfree"
+#define OFONO_SIRI_INTERFACE OFONO_SERVICE ".Siri"
 
 /* CDMA Interfaces */
 #define OFONO_CDMA_VOICECALL_MANAGER_INTERFACE "org.ofono.cdma.VoiceCallManager"