diff --git a/src/elements/emby-slider/emby-slider.css b/src/elements/emby-slider/emby-slider.css
index 18c09f61bf..64f83d7cf8 100644
--- a/src/elements/emby-slider/emby-slider.css
+++ b/src/elements/emby-slider/emby-slider.css
@@ -45,17 +45,6 @@
     background: transparent;
 }
 
-.mdl-slider::-moz-range-track {
-    background: #444;
-    border: none;
-    width: calc(100% - 20px);
-}
-
-.mdl-slider::-moz-range-progress {
-    background: #00a4dc;
-    width: calc(100% - 20px);
-}
-
 .mdl-slider::-ms-track {
     background: none;
     color: transparent;
@@ -108,14 +97,21 @@
 
 .mdl-slider::-moz-range-thumb {
     -moz-appearance: none;
-    width: 0.81em;
-    height: 0.81em;
+    width: 1.08em;
+    height: 1.08em;
     box-sizing: border-box;
     border-radius: 50%;
     background: #00a4dc;
     background-image: none;
     border: none;
-    transform: scale(1.4, 1.4);
+}
+
+.mdl-slider:hover::-moz-range-thumb {
+    transform: scale(1.3);
+}
+
+.mdl-slider.show-focus:focus::-moz-range-thumb {
+    transform: scale(1.3);
 }
 
 .mdl-slider::-ms-thumb {
diff --git a/src/elements/emby-slider/emby-slider.js b/src/elements/emby-slider/emby-slider.js
index f07e6433dc..8f93799e67 100644
--- a/src/elements/emby-slider/emby-slider.js
+++ b/src/elements/emby-slider/emby-slider.js
@@ -3,7 +3,7 @@ define(['browser', 'dom', 'layoutManager', 'keyboardnavigation', 'css!./emby-sli
 
     var EmbySliderPrototype = Object.create(HTMLInputElement.prototype);
 
-    var supportsNativeProgressStyle = browser.firefox;
+    var supportsNativeProgressStyle = false;
     var supportsValueSetOverride = false;
 
     var enableWidthWithTransform;