diff --git a/lib/ace/mouse/default_handlers.js b/lib/ace/mouse/default_handlers.js
index bff2e2bb..0acf64a6 100644
--- a/lib/ace/mouse/default_handlers.js
+++ b/lib/ace/mouse/default_handlers.js
@@ -86,7 +86,7 @@ function DefaultHandlers(mouseHandler) {
         if (inSelection && !editor.isFocused()) {
             editor.focus();
             if (this.$focusTimout && !this.$clickSelection && !editor.inMultiSelectMode) {
-                this.mousedownEvent.time = (new Date()).getTime();
+                this.mousedownEvent.time = Date.now();
                 this.setState("focusWait");
                 this.captureMouse(ev);
                 return;
@@ -98,7 +98,7 @@ function DefaultHandlers(mouseHandler) {
             // a selection.
             this.startSelect(pos);
         } else if (inSelection) {
-            this.mousedownEvent.time = (new Date()).getTime();
+            this.mousedownEvent.time = Date.now();
             this.startSelect(pos);
         }
         this.captureMouse(ev);
@@ -193,7 +193,7 @@ function DefaultHandlers(mouseHandler) {
 
     this.focusWait = function() {
         var distance = calcDistance(this.mousedownEvent.x, this.mousedownEvent.y, this.x, this.y);
-        var time = (new Date()).getTime();
+        var time = Date.now();
 
         if (distance > DRAG_OFFSET || time - this.mousedownEvent.time > this.$focusTimout)
             this.startSelect(this.mousedownEvent.getDocumentPosition());
diff --git a/lib/ace/mouse/dragdrop_handler.js b/lib/ace/mouse/dragdrop_handler.js
index 722dcb6a..3a4bc188 100644
--- a/lib/ace/mouse/dragdrop_handler.js
+++ b/lib/ace/mouse/dragdrop_handler.js
@@ -193,7 +193,7 @@ function DragdropHandler(mouseHandler) {
     event.addListener(mouseTarget, "drop", this.onDrop.bind(mouseHandler));
 
     function scrollCursorIntoView(cursor, prevCursor) {
-        var now = new Date().getTime();
+        var now = Date.now();
         var vMovement = !prevCursor || cursor.row != prevCursor.row;
         var hMovement = !prevCursor || cursor.column != prevCursor.column;
         if (!cursorMovedTime || vMovement || hMovement) {
@@ -214,7 +214,7 @@ function DragdropHandler(mouseHandler) {
     }
 
     function autoScroll(cursor, prevCursor) {
-        var now = new Date().getTime();
+        var now = Date.now();
         var lineHeight = editor.renderer.layerConfig.lineHeight;
         var characterWidth = editor.renderer.layerConfig.characterWidth;
         var editorRect = editor.renderer.scroller.getBoundingClientRect();
@@ -330,7 +330,7 @@ function DragdropHandler(mouseHandler) {
 (function() {
 
     this.dragWait = function() {
-        var interval = (new Date()).getTime() - this.mousedownEvent.time;
+        var interval = Date.now() - this.mousedownEvent.time;
         if (interval > this.editor.getDragDelay())
             this.startDrag();
     };
@@ -384,7 +384,7 @@ function DragdropHandler(mouseHandler) {
         var button = e.getButton();
         var clickCount = e.domEvent.detail || 1;
         if (clickCount === 1 && button === 0 && inSelection) {
-            this.mousedownEvent.time = (new Date()).getTime();
+            this.mousedownEvent.time = Date.now();
             var eventTarget = e.domEvent.target || e.domEvent.srcElement;
             if ("unselectable" in eventTarget)
                 eventTarget.unselectable = "on";