--- a/dom/media/test/test_seekToNextFrame.html
+++ b/dom/media/test/test_seekToNextFrame.html
@@ -79,17 +79,20 @@ function startTest(test, token) {
   v.addEventListener("ended", onEnded);
 
   document.body.appendChild(v);
 }
 
 SimpleTest.waitForExplicitFinish();
 SpecialPowers.pushPrefEnv(
   {
-    "set": [["media.seekToNextFrame.enabled", true ]]
+    "set": [
+      ["media.seekToNextFrame.enabled", true ],
+      ["media.dormant-on-pause-timeout-ms", -1]
+    ]
   },
   function() {
     manager.runTests(gSeekToNextFrameTests, startTest);
   });
 
 </script>
 </pre>
 </body>