diff --git a/lib/xdg-app-utils.h b/lib/xdg-app-utils.h
index d4d5c13d..a6441b90 100644
--- a/lib/xdg-app-utils.h
+++ b/lib/xdg-app-utils.h
@@ -125,7 +125,7 @@ static inline GMutex *xdg_app_auto_lock_helper (GMutex *mutex)
 }
 
 
-#define AUTOLOCK(name) __attribute__((cleanup(xdg_app_auto_unlock_helper))) GMutex * G_PASTE(auto_unlock, __LINE__) = xdg_app_auto_lock_helper (&G_LOCK_NAME (name))
+#define AUTOLOCK(name) G_GNUC_UNUSED __attribute__((cleanup(xdg_app_auto_unlock_helper))) GMutex * G_PASTE(auto_unlock, __LINE__) = xdg_app_auto_lock_helper (&G_LOCK_NAME (name))
 
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(OstreeRepo, g_object_unref)
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(OstreeMutableTree, g_object_unref)