diff --git a/tools/js2c.py b/tools/js2c.py
index 69ec8a83c4b..3406373b71a 100755
--- a/tools/js2c.py
+++ b/tools/js2c.py
@@ -227,7 +227,7 @@ static const struct _native natives[] = {
 
 %(native_lines)s\
 
-  { NULL, NULL } /* sentinel */
+  { NULL, NULL, 0 } /* sentinel */
 
 };