diff --git a/src/shell-window-tracker-private.h b/src/shell-window-tracker-private.h
new file mode 100644
index 000000000..b854615b1
--- /dev/null
+++ b/src/shell-window-tracker-private.h
@@ -0,0 +1,9 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+#ifndef __SHELL_WINDOW_TRACKER_PRIVATE_H__
+#define __SHELL_WINDOW_TRACKER_PRIVATE_H__
+
+#include "shell-window-tracker.h"
+
+void _shell_window_tracker_notify_app_state_changed (ShellWindowTracker *tracker, ShellApp *self);
+
+#endif