diff --git a/layers/+lang/javascript/packages.el b/layers/+lang/javascript/packages.el
index b4ba40277..ecf9d0163 100644
--- a/layers/+lang/javascript/packages.el
+++ b/layers/+lang/javascript/packages.el
@@ -112,7 +112,7 @@
 (defun javascript/init-js2-mode ()
   (use-package js2-mode
     :defer t
-    :mode (("\\.m?js\\'"  . js2-mode))
+    :mode (("\\.[cm]?js\\'"  . js2-mode))
     :init
     (progn
       (add-hook 'js2-mode-local-vars-hook #'spacemacs//javascript-setup-backend)