diff --git a/dom/media/test/test_bug495145.html b/dom/media/test/test_bug495145.html
index 019b8539fdc5..e512cc2f0e11 100644
--- a/dom/media/test/test_bug495145.html
+++ b/dom/media/test/test_bug495145.html
@@ -15,10 +15,6 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=495145
 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=495145">Mozilla Bug 495145</a>
 <pre id="test">
 <script class="testbody" type="text/javascript">
-//longer timeout for slow platforms
-if (isSlowPlatform()) {
-  SimpleTest.requestLongerTimeout(1.5);
-}
 
 var manager = new MediaTestManager;
 
diff --git a/dom/media/test/test_bug879717.html b/dom/media/test/test_bug879717.html
index 37c9a402ad73..858c8df189f0 100644
--- a/dom/media/test/test_bug879717.html
+++ b/dom/media/test/test_bug879717.html
@@ -9,10 +9,6 @@
 <body>
 <pre id="test">
 <script class="testbody" type="text/javascript">
-//longer timeout for slow platforms
-if (isSlowPlatform()) {
-  SimpleTest.requestLongerTimeout(1.5);
-}
 
 var manager = new MediaTestManager;
 
diff --git a/dom/media/test/test_fragment_noplay.html b/dom/media/test/test_fragment_noplay.html
index 42fc556e75f2..a8030e2a8ef3 100644
--- a/dom/media/test/test_fragment_noplay.html
+++ b/dom/media/test/test_fragment_noplay.html
@@ -12,11 +12,6 @@
 <pre id="test">
 <script class="testbody" type="text/javascript">
 
-//longer timeout for slow platforms
-if (isSlowPlatform()) {
-  SimpleTest.requestLongerTimeout(1.5);
-}
-
 var manager = new MediaTestManager;
 
 // Fragment parameters to try
diff --git a/dom/media/test/test_loop.html b/dom/media/test/test_loop.html
index 6f726edbbc06..5044c754dfd4 100644
--- a/dom/media/test/test_loop.html
+++ b/dom/media/test/test_loop.html
@@ -9,10 +9,6 @@
 <body>
 <pre id="test">
 <script class="testbody" type="text/javascript">
-//longer timeout for slow platforms
-if (isSlowPlatform()) {
-  SimpleTest.requestLongerTimeout(2);
-}
 
 var manager = new MediaTestManager;
 
diff --git a/dom/media/test/test_media_selection.html b/dom/media/test/test_media_selection.html
index afc3233a1181..b9591038b052 100644
--- a/dom/media/test/test_media_selection.html
+++ b/dom/media/test/test_media_selection.html
@@ -9,10 +9,6 @@
 <body>
 <pre id="test">
 <script class="testbody" type="text/javascript">
-//longer timeout for sometimes B2G emulator runs very slowly
-if (SpecialPowers.Services.appinfo.name == "B2G") {
-  SimpleTest.requestLongerTimeout(3);
-}
 
 var manager = new MediaTestManager;
 
diff --git a/dom/media/test/test_playback.html b/dom/media/test/test_playback.html
index c7db22544875..4de3056ed1fb 100644
--- a/dom/media/test/test_playback.html
+++ b/dom/media/test/test_playback.html
@@ -10,12 +10,6 @@
 <pre id="test">
 <script class="testbody" type="text/javascript">
 
-// longer timeout for slow platforms
-if (isSlowPlatform()) {
-  SimpleTest.requestLongerTimeout(3);
-  SimpleTest.requestCompleteLog();
-}
-
 var manager = new MediaTestManager;
 
 function startTest(test, token) {
diff --git a/dom/media/test/test_playback_reactivate.html b/dom/media/test/test_playback_reactivate.html
index 0a9e088b6fae..d69202edb036 100644
--- a/dom/media/test/test_playback_reactivate.html
+++ b/dom/media/test/test_playback_reactivate.html
@@ -17,12 +17,6 @@
    Test pass if the video plays to the end.
 */
 
-// longer timeout for slow platforms
-if (isSlowPlatform()) {
-  SimpleTest.requestLongerTimeout(1.5);
-  SimpleTest.requestCompleteLog();
-}
-
 var manager = new MediaTestManager;
 
 function startTest(test, token) {
diff --git a/dom/media/test/test_played.html b/dom/media/test/test_played.html
index 7eedb43b2c91..e280fdbe5f5d 100644
--- a/dom/media/test/test_played.html
+++ b/dom/media/test/test_played.html
@@ -10,12 +10,7 @@
 <body>
 <pre id='test'>
 <script class="testbody" type='application/javascript'>
-//longer timeout for sometimes B2G emulator runs very slowly
-if (SpecialPowers.Services.appinfo.name == "B2G") {
-  SimpleTest.requestLongerTimeout(3);
-}
 
-SimpleTest.requestCompleteLog();
 let manager = new MediaTestManager;
 
 function finish_test(element) {
