--- a/dom/media/webaudio/test/test_audioParamSetTargetAtTimeZeroTimeConstant.html
+++ b/dom/media/webaudio/test/test_audioParamSetTargetAtTimeZeroTimeConstant.html
@@ -42,14 +42,17 @@ var gTest = {
     for (var i = 0; i < 2048; ++i) {
       var t = i / context.sampleRate;
       expectedBuffer.getChannelData(0)[i] = V1;
     }
     return expectedBuffer;
   },
 };
 
-runTest();
+SimpleTest.waitForExplicitFinish();
+// Comparing different AudioContexts may result in different timing reated information being reported
+// when we jitter time, as they are on different Relative Timelines.
+SpecialPowers.pushPrefEnv({"set": [["privacy.resistFingerprinting.reduceTimerPrecision.jitter", false]]}, runTest);
 
 </script>
 </pre>
 </body>
 </html>