diff --git a/static/application.js b/static/application.js
index 7afb014..9b26ee1 100644
--- a/static/application.js
+++ b/static/application.js
@@ -168,7 +168,7 @@ haste.extensionMap = {
   lua: 'lua', pas: 'delphi', java: 'java', cpp: 'cpp', cc: 'cpp', m: 'objectivec',
   vala: 'vala', cs: 'cs', sql: 'sql', sm: 'smalltalk', lisp: 'lisp', ini: 'ini',
   diff: 'diff', bash: 'bash', sh: 'bash', tex: 'tex', erl: 'erlang', hs: 'haskell',
-  md: 'markdown', txt: '', coffee: 'coffee'
+  md: 'markdown', txt: '', coffee: 'coffee', json: 'js'
 };
 
 // Look up the extension preferred for a type