diff --git a/src/zepto.js b/src/zepto.js
index c33fc0a56..1b09b4c1c 100644
--- a/src/zepto.js
+++ b/src/zepto.js
@@ -529,7 +529,7 @@ var Zepto = (function() {
       return filtered(this.map(function(){ return children(this) }), selector)
     },
     contents: function() {
-      return this.map(function() { return slice.call(this.childNodes) })
+      return this.map(function() { return this.contentDocument || slice.call(this.childNodes) })
     },
     siblings: function(selector){
       return filtered(this.map(function(i, el){
diff --git a/test/zepto.html b/test/zepto.html
index fe6e71c03..aaca98680 100644
--- a/test/zepto.html
+++ b/test/zepto.html
@@ -143,8 +143,10 @@ <h1>Zepto Core unit tests</h1>
   </ul>
 
   <ul id="contentsTest">1<span>2</span><span id="contentsEmptyTest"></span></ul>
+  
+  <iframe id="contentsIframeTest" src="fixtures/iframe_document.html"></iframe>
 
-   <ul id="siblingsTest">
+  <ul id="siblingsTest">
     <li class="child one"><span class="b"></span><em></em><b></b></li>
     <li class="child two"><span class="c"></span><em></em><b></b></li>
     <li class="child three"><span class="d"></span><em></em><b></b></li>
@@ -1248,6 +1250,11 @@ <h1>Zepto Core unit tests</h1>
         t.assertLength(2, $contents.filter('span'))
         t.assertLength(0, $("#contentsEmptyTest").contents())
       },
+      
+      testIframeContents: function(t){
+        var el = $("#contentsIframeTest")
+        t.assertEqual("Hello from iframe!", el.contents().find("b").first().text())
+      },
 
       testSiblings: function(t){
         var el=$("#siblingsTest")