diff --git a/Gruntfile.js b/Gruntfile.js
index f886436..fa42265 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -22,7 +22,7 @@ module.exports = function(grunt) {
             },
         },
 
-        // Before generating any new files, remove any 
+        // Before generating any new files, remove any
         // previously-created files.
         clean: {
             tests: ['tmp'],
@@ -62,7 +62,7 @@ module.exports = function(grunt) {
 
     // Whenever the "test" task is run, first clean the "tmp" dir,
     // then run this plugin's task(s), then test the result.
-    grunt.registerTask('test', ['clean', 'phantomcss', 'nodeunit']);
+    grunt.registerTask('test', ['clean', 'phantomcss-gitdiff', 'nodeunit']);
 
     // By default, lint and run all tests.
     grunt.registerTask('default', ['jshint', 'test']);