diff --git a/Gruntfile.coffee b/Gruntfile.coffee
index 60220c8af..c40d2cabd 100755
--- a/Gruntfile.coffee
+++ b/Gruntfile.coffee
@@ -151,7 +151,7 @@ module.exports = (grunt) ->
       prod:
         src: 'testbuilds/crx<%= pkg.meta.suffix[pkg.channel] %>/'
         dest: 'testbuilds/<%= pkg.name %><%= pkg.meta.suffix[pkg.channel] %>.crx'
-        privateKey: '~/.ssh/<%= pkg.name %>.pem'
+        privateKey: '../<%= pkg.name %>.pem'
 
     compress:
       crx: