diff --git a/grammars/javascript.cson b/grammars/javascript.cson
index 6e097a90..2663fdeb 100644
--- a/grammars/javascript.cson
+++ b/grammars/javascript.cson
@@ -13,6 +13,7 @@
   'jspre'
   'pac'
   'pjs'
+  'sjs'
   'xsjs'
   'xsjslib'
 ]