diff --git a/tests/wpt/mozilla/tests/css/float_relative_to_position.html b/tests/wpt/mozilla/tests/css/float_relative_to_position.html
index d72f26ed342..bdeb133ef11 100644
--- a/tests/wpt/mozilla/tests/css/float_relative_to_position.html
+++ b/tests/wpt/mozilla/tests/css/float_relative_to_position.html
@@ -3,24 +3,37 @@
 <head>
 <meta charset=utf-8>
 <title>Tests the relationship between float and position</title>
+<style>
+    div {
+        float: left;
+    }
+</style>
 <head>
 <body>
-<div style="position: fixed; float: left"></div>
+<div></div>
 
 <script src=/resources/testharness.js></script>
 <script src=/resources/testharnessreport.js></script>
 <script>
     test(function() {
         var computed_style = getComputedStyle(document.querySelector("div"))["float"];
-        assert_equals(computed_style, "none");
+        assert_equals(computed_style, "left");
 
-        document.querySelector("div").setAttribute("position", "absolute");
+        document.querySelector("div").setAttribute("style", "position: fixed;");
 
         computed_style = getComputedStyle(document.querySelector("div"))["float"];
         assert_equals(computed_style, "none");
-        });
 
-    <!-- test(); -->
+        document.querySelector("div").setAttribute("style", "position: absolute;");
+
+        computed_style = getComputedStyle(document.querySelector("div"))["float"];
+        assert_equals(computed_style, "none");
+
+        document.querySelector("div").removeAttribute("style");
+
+        computed_style = getComputedStyle(document.querySelector("div"))["float"];
+        assert_equals(computed_style, "left");
+    });
 </script>
 
 </body>
