diff --git a/src/diff.filter.js b/src/diff.filter.js
index 5d72d1a..3621067 100644
--- a/src/diff.filter.js
+++ b/src/diff.filter.js
@@ -1,7 +1,7 @@
 'use strict';
 
 angular.module('diff', [])
-  .filter('diff', function () {
+  .filter('diff', function ($sce) {
 
   /*
    * Javascript Diff Algorithm
@@ -173,6 +173,6 @@ angular.module('diff', [])
 
   // Actual filter
   return function(input, match) {
-    return diffString(input, match);
+    return $sce.trustAsHtml(diffString(input, match));
   };
 });
diff --git a/tests/diff.filter.js b/tests/diff.filter.js
index 0c9b35f..7da4595 100644
--- a/tests/diff.filter.js
+++ b/tests/diff.filter.js
@@ -9,7 +9,8 @@ describe('filter', function() {
     it('should convert a string to the diff value with another string', inject(function(diffFilter) {
       expect(diffFilter(
         'The red brown fox jumped over the rolling log.',
-        'The brown spotted fox leaped over the rolling log')).toBe(
+        'The brown spotted fox leaped over the rolling log')
+        .$$unwrapTrustedValue()).toBe(
         ' The <del>red </del> brown <ins>spotted </ins> fox <del>jumped </del><ins>leaped </ins> over  the  rolling <del>log.\n</del><ins>log\n</ins>');
     }));
   });