diff --git a/test/matchers/JSONMatcher.js b/test/matchers/JSONMatcher.js
index 9dc38a50..c34b24f7 100644
--- a/test/matchers/JSONMatcher.js
+++ b/test/matchers/JSONMatcher.js
@@ -1,16 +1,16 @@
 export default function(chai, utils) {
 
-  utils.addMethod(chai.Assertion.prototype, 'jsonEqual', function(comparison) {
+  utils.addMethod(chai.Assertion.prototype, 'jsonEqual', function(comparison, filter) {
 
-    var actual = JSON.stringify(this._obj);
-    var expected = JSON.stringify(comparison);
+    var actual = JSON.stringify(this._obj, filter, '  ');
+    var expected = JSON.stringify(comparison, filter, '  ');
 
     this.assert(
       actual == expected,
-      'expected #{this} to deep equal #{act}',
-      'expected #{this} not to deep equal #{act}',
-      comparison, // expected
-      this._obj, // actual
+      'expected #{this} to json equal #{exp} but got #{act}',
+      'expected #{this} not to json equal #{exp}',
+      expected, // expected
+      actual, // actual
       true // show diff
     );
   });