diff --git a/src/platform/nm-platform.h b/src/platform/nm-platform.h
index abb21bd2aa..2bdc7d79e5 100644
--- a/src/platform/nm-platform.h
+++ b/src/platform/nm-platform.h
@@ -97,6 +97,7 @@ struct _NMPlatformLink {
 };
 
 typedef enum {
+	NM_PLATFORM_SIGNAL_NONE,
 	NM_PLATFORM_SIGNAL_ADDED,
 	NM_PLATFORM_SIGNAL_CHANGED,
 	NM_PLATFORM_SIGNAL_REMOVED,