diff --git a/include/extinit.h b/include/extinit.h
index 37fa9a245..c47100879 100644
--- a/include/extinit.h
+++ b/include/extinit.h
@@ -104,6 +104,12 @@ SDeviceMappingNotifyEvent (
 	deviceMappingNotify *  /* to */
 	);
 
+void
+SDevicePresenceNotifyEvent (
+       devicePresenceNotify * /* from */,
+       devicePresenceNotify * /* to */
+       );
+
 void
 FixExtensionEvents (
 	ExtensionEntry 	*      /* extEntry */