diff --git a/wp-admin/gears-manifest.php b/wp-admin/gears-manifest.php
index 8ff25ff1c..47ec5d54e 100644
--- a/wp-admin/gears-manifest.php
+++ b/wp-admin/gears-manifest.php
@@ -15,6 +15,11 @@ define( 'WPINC', '/wp-includes' );
  */
 function __() {}
 
+/**
+ * @ignore
+ */
+function _c() {}
+
 /**
  * @ignore
  */