diff --git a/src/ol/pointer/MouseSource.js b/src/ol/pointer/MouseSource.js
index 0aa04f6879..7baa966552 100644
--- a/src/ol/pointer/MouseSource.js
+++ b/src/ol/pointer/MouseSource.js
@@ -39,7 +39,7 @@ import EventSource from '../pointer/EventSource.js';
  * @constructor
  * @extends {ol.pointer.EventSource}
  */
-const _ol_pointer_MouseSource_ = function(dispatcher) {
+const MouseSource = function(dispatcher) {
   const mapping = {
     'mousedown': this.mousedown,
     'mousemove': this.mousemove,
@@ -62,21 +62,21 @@ const _ol_pointer_MouseSource_ = function(dispatcher) {
   this.lastTouches = [];
 };
 
-inherits(_ol_pointer_MouseSource_, EventSource);
+inherits(MouseSource, EventSource);
 
 
 /**
  * @const
  * @type {number}
  */
-_ol_pointer_MouseSource_.POINTER_ID = 1;
+MouseSource.POINTER_ID = 1;
 
 
 /**
  * @const
  * @type {string}
  */
-_ol_pointer_MouseSource_.POINTER_TYPE = 'mouse';
+MouseSource.POINTER_TYPE = 'mouse';
 
 
 /**
@@ -85,7 +85,7 @@ _ol_pointer_MouseSource_.POINTER_TYPE = 'mouse';
  * @const
  * @type {number}
  */
-_ol_pointer_MouseSource_.DEDUP_DIST = 25;
+MouseSource.DEDUP_DIST = 25;
 
 
 /**
@@ -112,7 +112,7 @@ _ol_pointer_MouseSource_.DEDUP_DIST = 25;
  * @param {Event} inEvent The in event.
  * @return {boolean} True, if the event was generated by a touch.
  */
-_ol_pointer_MouseSource_.prototype.isEventSimulatedFromTouch_ = function(inEvent) {
+MouseSource.prototype.isEventSimulatedFromTouch_ = function(inEvent) {
   const lts = this.lastTouches;
   const x = inEvent.clientX;
   const y = inEvent.clientY;
@@ -120,8 +120,8 @@ _ol_pointer_MouseSource_.prototype.isEventSimulatedFromTouch_ = function(inEvent
     // simulated mouse events will be swallowed near a primary touchend
     const dx = Math.abs(x - t[0]);
     const dy = Math.abs(y - t[1]);
-    if (dx <= _ol_pointer_MouseSource_.DEDUP_DIST &&
-        dy <= _ol_pointer_MouseSource_.DEDUP_DIST) {
+    if (dx <= MouseSource.DEDUP_DIST &&
+        dy <= MouseSource.DEDUP_DIST) {
       return true;
     }
   }
@@ -137,7 +137,7 @@ _ol_pointer_MouseSource_.prototype.isEventSimulatedFromTouch_ = function(inEvent
  * @param {ol.pointer.PointerEventHandler} dispatcher Event handler.
  * @return {Object} The copied event.
  */
-_ol_pointer_MouseSource_.prepareEvent = function(inEvent, dispatcher) {
+MouseSource.prepareEvent = function(inEvent, dispatcher) {
   const e = dispatcher.cloneEvent(inEvent, inEvent);
 
   // forward mouse preventDefault
@@ -147,9 +147,9 @@ _ol_pointer_MouseSource_.prepareEvent = function(inEvent, dispatcher) {
     pd();
   };
 
-  e.pointerId = _ol_pointer_MouseSource_.POINTER_ID;
+  e.pointerId = MouseSource.POINTER_ID;
   e.isPrimary = true;
-  e.pointerType = _ol_pointer_MouseSource_.POINTER_TYPE;
+  e.pointerType = MouseSource.POINTER_TYPE;
 
   return e;
 };
@@ -160,15 +160,15 @@ _ol_pointer_MouseSource_.prepareEvent = function(inEvent, dispatcher) {
  *
  * @param {Event} inEvent The in event.
  */
-_ol_pointer_MouseSource_.prototype.mousedown = function(inEvent) {
+MouseSource.prototype.mousedown = function(inEvent) {
   if (!this.isEventSimulatedFromTouch_(inEvent)) {
     // TODO(dfreedman) workaround for some elements not sending mouseup
     // http://crbug/149091
-    if (_ol_pointer_MouseSource_.POINTER_ID.toString() in this.pointerMap) {
+    if (MouseSource.POINTER_ID.toString() in this.pointerMap) {
       this.cancel(inEvent);
     }
-    const e = _ol_pointer_MouseSource_.prepareEvent(inEvent, this.dispatcher);
-    this.pointerMap[_ol_pointer_MouseSource_.POINTER_ID.toString()] = inEvent;
+    const e = MouseSource.prepareEvent(inEvent, this.dispatcher);
+    this.pointerMap[MouseSource.POINTER_ID.toString()] = inEvent;
     this.dispatcher.down(e, inEvent);
   }
 };
@@ -179,9 +179,9 @@ _ol_pointer_MouseSource_.prototype.mousedown = function(inEvent) {
  *
  * @param {Event} inEvent The in event.
  */
-_ol_pointer_MouseSource_.prototype.mousemove = function(inEvent) {
+MouseSource.prototype.mousemove = function(inEvent) {
   if (!this.isEventSimulatedFromTouch_(inEvent)) {
-    const e = _ol_pointer_MouseSource_.prepareEvent(inEvent, this.dispatcher);
+    const e = MouseSource.prepareEvent(inEvent, this.dispatcher);
     this.dispatcher.move(e, inEvent);
   }
 };
@@ -192,12 +192,12 @@ _ol_pointer_MouseSource_.prototype.mousemove = function(inEvent) {
  *
  * @param {Event} inEvent The in event.
  */
-_ol_pointer_MouseSource_.prototype.mouseup = function(inEvent) {
+MouseSource.prototype.mouseup = function(inEvent) {
   if (!this.isEventSimulatedFromTouch_(inEvent)) {
-    const p = this.pointerMap[_ol_pointer_MouseSource_.POINTER_ID.toString()];
+    const p = this.pointerMap[MouseSource.POINTER_ID.toString()];
 
     if (p && p.button === inEvent.button) {
-      const e = _ol_pointer_MouseSource_.prepareEvent(inEvent, this.dispatcher);
+      const e = MouseSource.prepareEvent(inEvent, this.dispatcher);
       this.dispatcher.up(e, inEvent);
       this.cleanupMouse();
     }
@@ -210,9 +210,9 @@ _ol_pointer_MouseSource_.prototype.mouseup = function(inEvent) {
  *
  * @param {Event} inEvent The in event.
  */
-_ol_pointer_MouseSource_.prototype.mouseover = function(inEvent) {
+MouseSource.prototype.mouseover = function(inEvent) {
   if (!this.isEventSimulatedFromTouch_(inEvent)) {
-    const e = _ol_pointer_MouseSource_.prepareEvent(inEvent, this.dispatcher);
+    const e = MouseSource.prepareEvent(inEvent, this.dispatcher);
     this.dispatcher.enterOver(e, inEvent);
   }
 };
@@ -223,9 +223,9 @@ _ol_pointer_MouseSource_.prototype.mouseover = function(inEvent) {
  *
  * @param {Event} inEvent The in event.
  */
-_ol_pointer_MouseSource_.prototype.mouseout = function(inEvent) {
+MouseSource.prototype.mouseout = function(inEvent) {
   if (!this.isEventSimulatedFromTouch_(inEvent)) {
-    const e = _ol_pointer_MouseSource_.prepareEvent(inEvent, this.dispatcher);
+    const e = MouseSource.prepareEvent(inEvent, this.dispatcher);
     this.dispatcher.leaveOut(e, inEvent);
   }
 };
@@ -236,8 +236,8 @@ _ol_pointer_MouseSource_.prototype.mouseout = function(inEvent) {
  *
  * @param {Event} inEvent The in event.
  */
-_ol_pointer_MouseSource_.prototype.cancel = function(inEvent) {
-  const e = _ol_pointer_MouseSource_.prepareEvent(inEvent, this.dispatcher);
+MouseSource.prototype.cancel = function(inEvent) {
+  const e = MouseSource.prepareEvent(inEvent, this.dispatcher);
   this.dispatcher.cancel(e, inEvent);
   this.cleanupMouse();
 };
@@ -246,7 +246,7 @@ _ol_pointer_MouseSource_.prototype.cancel = function(inEvent) {
 /**
  * Remove the mouse from the list of active pointers.
  */
-_ol_pointer_MouseSource_.prototype.cleanupMouse = function() {
-  delete this.pointerMap[_ol_pointer_MouseSource_.POINTER_ID.toString()];
+MouseSource.prototype.cleanupMouse = function() {
+  delete this.pointerMap[MouseSource.POINTER_ID.toString()];
 };
-export default _ol_pointer_MouseSource_;
+export default MouseSource;
diff --git a/src/ol/pointer/PointerEventHandler.js b/src/ol/pointer/PointerEventHandler.js
index f72b1e4432..4b9bff4e9a 100644
--- a/src/ol/pointer/PointerEventHandler.js
+++ b/src/ol/pointer/PointerEventHandler.js
@@ -36,7 +36,7 @@ import _ol_events_ from '../events.js';
 import EventTarget from '../events/EventTarget.js';
 import _ol_has_ from '../has.js';
 import PointerEventType from '../pointer/EventType.js';
-import _ol_pointer_MouseSource_ from '../pointer/MouseSource.js';
+import MouseSource from '../pointer/MouseSource.js';
 import _ol_pointer_MsSource_ from '../pointer/MsSource.js';
 import _ol_pointer_NativeSource_ from '../pointer/NativeSource.js';
 import PointerEvent from '../pointer/PointerEvent.js';
@@ -91,7 +91,7 @@ PointerEventHandler.prototype.registerSources = function() {
   } else if (_ol_has_.MSPOINTER) {
     this.registerSource('ms', new _ol_pointer_MsSource_(this));
   } else {
-    const mouseSource = new _ol_pointer_MouseSource_(this);
+    const mouseSource = new MouseSource(this);
     this.registerSource('mouse', mouseSource);
 
     if (_ol_has_.TOUCH) {
@@ -389,7 +389,7 @@ PointerEventHandler.prototype.fireNativeEvent = function(event) {
  */
 PointerEventHandler.prototype.wrapMouseEvent = function(eventType, event) {
   const pointerEvent = this.makeEvent(
-    eventType, _ol_pointer_MouseSource_.prepareEvent(event, this), event);
+    eventType, MouseSource.prepareEvent(event, this), event);
   return pointerEvent;
 };
 
diff --git a/src/ol/pointer/TouchSource.js b/src/ol/pointer/TouchSource.js
index a92f26ee7e..de12db0675 100644
--- a/src/ol/pointer/TouchSource.js
+++ b/src/ol/pointer/TouchSource.js
@@ -34,7 +34,7 @@
 import {inherits} from '../index.js';
 import {remove} from '../array.js';
 import EventSource from '../pointer/EventSource.js';
-import _ol_pointer_MouseSource_ from '../pointer/MouseSource.js';
+import MouseSource from '../pointer/MouseSource.js';
 
 /**
  * @constructor
@@ -126,7 +126,7 @@ _ol_pointer_TouchSource_.prototype.isPrimaryTouch_ = function(inTouch) {
 _ol_pointer_TouchSource_.prototype.setPrimaryTouch_ = function(inTouch) {
   const count = Object.keys(this.pointerMap).length;
   if (count === 0 || (count === 1 &&
-      _ol_pointer_MouseSource_.POINTER_ID.toString() in this.pointerMap)) {
+      MouseSource.POINTER_ID.toString() in this.pointerMap)) {
     this.firstTouchId_ = inTouch.identifier;
     this.cancelResetClickCount_();
   }
@@ -277,7 +277,7 @@ _ol_pointer_TouchSource_.prototype.vacuumTouches_ = function(inEvent) {
       // Never remove pointerId == 1, which is mouse.
       // Touch identifiers are 2 smaller than their pointerId, which is the
       // index in pointermap.
-      if (key != _ol_pointer_MouseSource_.POINTER_ID &&
+      if (key != MouseSource.POINTER_ID &&
           !this.findTouch_(touchList, key - 2)) {
         d.push(value.out);
       }
diff --git a/test/spec/ol/pointer/pointereventhandler.test.js b/test/spec/ol/pointer/pointereventhandler.test.js
index 1047dbe870..226f98f43b 100644
--- a/test/spec/ol/pointer/pointereventhandler.test.js
+++ b/test/spec/ol/pointer/pointereventhandler.test.js
@@ -1,7 +1,7 @@
 import _ol_events_ from '../../../../src/ol/events.js';
 import EventTarget from '../../../../src/ol/events/EventTarget.js';
 import _ol_has_ from '../../../../src/ol/has.js';
-import _ol_pointer_MouseSource_ from '../../../../src/ol/pointer/MouseSource.js';
+import MouseSource from '../../../../src/ol/pointer/MouseSource.js';
 import PointerEvent from '../../../../src/ol/pointer/PointerEvent.js';
 import PointerEventHandler from '../../../../src/ol/pointer/PointerEventHandler.js';
 
@@ -30,7 +30,7 @@ describe('ol.pointer.PointerEventHandler', function() {
   describe('constructor', function() {
     it('registers a least one event source', function() {
       expect(handler.eventSourceList_.length).to.be.greaterThan(0);
-      expect(handler.eventSourceList_[0]).to.be.a(_ol_pointer_MouseSource_);
+      expect(handler.eventSourceList_[0]).to.be.a(MouseSource);
     });
   });