diff --git a/wp-admin/css/wp-admin.css b/wp-admin/css/wp-admin.css
index 074b1ce087..d9aa74f2cb 100644
--- a/wp-admin/css/wp-admin.css
+++ b/wp-admin/css/wp-admin.css
@@ -3666,14 +3666,6 @@ table.diff .diff-addedline ins {
 	padding: 4px;
 }
 
-.revisions-tooltip.fade {
-	-webkit-transition: opacity 200ms;
-	-ms-transition:     opacity 200ms;
-	-moz-transition:    opacity 200ms;
-	-o-transition:      opacity 200ms;
-	transition:         opacity 200ms;
-}
-
 .comparing-two-revisions .revisions-tooltip {
 	bottom: 145px;
 }
diff --git a/wp-admin/js/revisions.js b/wp-admin/js/revisions.js
index 512553ec62..e4f4535455 100644
--- a/wp-admin/js/revisions.js
+++ b/wp-admin/js/revisions.js
@@ -619,13 +619,11 @@ window.wp = window.wp || {};
 
 		toggleVisibility: function( options ) {
 			options = options || {};
-			var visible = this.visible()
+			var visible = this.visible();
 			if ( visible ) { // Immediate show
-				// this.$el.removeClass('fade');
-				this.$el.css( 'opacity', 1 );
+				this.$el.fadeIn( 200 );
 			} else if ( options.immediate ) { // Immediate fade out
-				this.$el.addClass('fade');
-				this.$el.css( 'opacity', 0 );
+				this.$el.fadeOut( 200 );
 			} else { // Wait a bit, make sure we're really done, then fade it out
 				_.delay( function( view ) {
 					if ( ! view.visible() )