diff --git a/css/structure/jquery.mobile.forms.slider.css b/css/structure/jquery.mobile.forms.slider.css
index d22dd3e8..0584be86 100644
--- a/css/structure/jquery.mobile.forms.slider.css
+++ b/css/structure/jquery.mobile.forms.slider.css
@@ -13,7 +13,7 @@ a.ui-slider-handle .ui-btn-inner { padding-left: 0; padding-right: 0; }
 
 div.ui-slider-switch { height: 32px;  overflow: hidden; margin-left: 0; }
 div.ui-slider-inneroffset { margin-left: 50%; position: absolute; top: 1px; height: 100%; width: 50%; }
-a.ui-slider-handle-snapping { -webkit-transition: left 70ms linear; }
+a.ui-slider-handle-snapping { -webkit-transition: left 70ms linear; -moz-transition: left 70ms linear; }
 div.ui-slider-labelbg { position: absolute; top:0; margin: 0; border-width: 0; }
 div.ui-slider-switch div.ui-slider-labelbg-a { width: 60%; height: 100%; left: 0; }
 div.ui-slider-switch div.ui-slider-labelbg-b { width: 60%; height: 100%; right: 0; }