diff --git a/src/ol/PluggableMap.js b/src/ol/PluggableMap.js
index 0bb3189328..61932e000b 100644
--- a/src/ol/PluggableMap.js
+++ b/src/ol/PluggableMap.js
@@ -27,7 +27,7 @@ import _ol_layer_Group_ from './layer/Group.js';
 import _ol_plugins_ from './plugins.js';
 import _ol_renderer_Type_ from './renderer/Type.js';
 import _ol_size_ from './size.js';
-import _ol_structs_PriorityQueue_ from './structs/PriorityQueue.js';
+import PriorityQueue from './structs/PriorityQueue.js';
 import _ol_transform_ from './transform.js';
 
 
@@ -875,10 +875,10 @@ _ol_PluggableMap_.prototype.getTilePriority = function(tile, tileSourceKey, tile
   // are outside the visible extent.
   var frameState = this.frameState_;
   if (!frameState || !(tileSourceKey in frameState.wantedTiles)) {
-    return _ol_structs_PriorityQueue_.DROP;
+    return PriorityQueue.DROP;
   }
   if (!frameState.wantedTiles[tileSourceKey][tile.getKey()]) {
-    return _ol_structs_PriorityQueue_.DROP;
+    return PriorityQueue.DROP;
   }
   // Prioritize the highest zoom level tiles closest to the focus.
   // Tiles at higher zoom levels are prioritized using Math.log(tileResolution).
diff --git a/src/ol/TileQueue.js b/src/ol/TileQueue.js
index 6540135392..fa16d9aba5 100644
--- a/src/ol/TileQueue.js
+++ b/src/ol/TileQueue.js
@@ -5,7 +5,7 @@ import {inherits} from './index.js';
 import _ol_TileState_ from './TileState.js';
 import _ol_events_ from './events.js';
 import EventType from './events/EventType.js';
-import _ol_structs_PriorityQueue_ from './structs/PriorityQueue.js';
+import PriorityQueue from './structs/PriorityQueue.js';
 
 /**
  * @constructor
@@ -18,7 +18,7 @@ import _ol_structs_PriorityQueue_ from './structs/PriorityQueue.js';
  */
 var _ol_TileQueue_ = function(tilePriorityFunction, tileChangeCallback) {
 
-  _ol_structs_PriorityQueue_.call(
+  PriorityQueue.call(
       this,
       /**
        * @param {Array} element Element.
@@ -55,14 +55,14 @@ var _ol_TileQueue_ = function(tilePriorityFunction, tileChangeCallback) {
 
 };
 
-inherits(_ol_TileQueue_, _ol_structs_PriorityQueue_);
+inherits(_ol_TileQueue_, PriorityQueue);
 
 
 /**
  * @inheritDoc
  */
 _ol_TileQueue_.prototype.enqueue = function(element) {
-  var added = _ol_structs_PriorityQueue_.prototype.enqueue.call(this, element);
+  var added = PriorityQueue.prototype.enqueue.call(this, element);
   if (added) {
     var tile = element[0];
     _ol_events_.listen(tile, EventType.CHANGE,
diff --git a/src/ol/renderer/webgl/Map.js b/src/ol/renderer/webgl/Map.js
index be3a015075..292ad822c0 100644
--- a/src/ol/renderer/webgl/Map.js
+++ b/src/ol/renderer/webgl/Map.js
@@ -16,7 +16,7 @@ import _ol_renderer_Map_ from '../Map.js';
 import _ol_renderer_Type_ from '../Type.js';
 import _ol_source_State_ from '../../source/State.js';
 import LRUCache from '../../structs/LRUCache.js';
-import _ol_structs_PriorityQueue_ from '../../structs/PriorityQueue.js';
+import PriorityQueue from '../../structs/PriorityQueue.js';
 import _ol_webgl_ from '../../webgl.js';
 import _ol_webgl_Context_ from '../../webgl/Context.js';
 import _ol_webgl_ContextEventType_ from '../../webgl/ContextEventType.js';
@@ -113,7 +113,7 @@ var _ol_renderer_webgl_Map_ = function(container, map) {
    * @private
    * @type {ol.structs.PriorityQueue.<Array>}
    */
-  this.tileTextureQueue_ = new _ol_structs_PriorityQueue_(
+  this.tileTextureQueue_ = new PriorityQueue(
       /**
        * @param {Array.<*>} element Element.
        * @return {number} Priority.
diff --git a/src/ol/structs/PriorityQueue.js b/src/ol/structs/PriorityQueue.js
index 9ccb36c42e..6285793b55 100644
--- a/src/ol/structs/PriorityQueue.js
+++ b/src/ol/structs/PriorityQueue.js
@@ -19,7 +19,7 @@ import _ol_obj_ from '../obj.js';
  * @struct
  * @template T
  */
-var _ol_structs_PriorityQueue_ = function(priorityFunction, keyFunction) {
+var PriorityQueue = function(priorityFunction, keyFunction) {
 
   /**
    * @type {function(T): number}
@@ -58,13 +58,13 @@ var _ol_structs_PriorityQueue_ = function(priorityFunction, keyFunction) {
  * @const
  * @type {number}
  */
-_ol_structs_PriorityQueue_.DROP = Infinity;
+PriorityQueue.DROP = Infinity;
 
 
 /**
  * FIXME empty description for jsdoc
  */
-_ol_structs_PriorityQueue_.prototype.clear = function() {
+PriorityQueue.prototype.clear = function() {
   this.elements_.length = 0;
   this.priorities_.length = 0;
   _ol_obj_.clear(this.queuedElements_);
@@ -75,7 +75,7 @@ _ol_structs_PriorityQueue_.prototype.clear = function() {
  * Remove and return the highest-priority element. O(log N).
  * @return {T} Element.
  */
-_ol_structs_PriorityQueue_.prototype.dequeue = function() {
+PriorityQueue.prototype.dequeue = function() {
   var elements = this.elements_;
   var priorities = this.priorities_;
   var element = elements[0];
@@ -98,11 +98,11 @@ _ol_structs_PriorityQueue_.prototype.dequeue = function() {
  * @param {T} element Element.
  * @return {boolean} The element was added to the queue.
  */
-_ol_structs_PriorityQueue_.prototype.enqueue = function(element) {
+PriorityQueue.prototype.enqueue = function(element) {
   _ol_asserts_.assert(!(this.keyFunction_(element) in this.queuedElements_),
       31); // Tried to enqueue an `element` that was already added to the queue
   var priority = this.priorityFunction_(element);
-  if (priority != _ol_structs_PriorityQueue_.DROP) {
+  if (priority != PriorityQueue.DROP) {
     this.elements_.push(element);
     this.priorities_.push(priority);
     this.queuedElements_[this.keyFunction_(element)] = true;
@@ -116,7 +116,7 @@ _ol_structs_PriorityQueue_.prototype.enqueue = function(element) {
 /**
  * @return {number} Count.
  */
-_ol_structs_PriorityQueue_.prototype.getCount = function() {
+PriorityQueue.prototype.getCount = function() {
   return this.elements_.length;
 };
 
@@ -127,7 +127,7 @@ _ol_structs_PriorityQueue_.prototype.getCount = function() {
  * @return {number} The index of the left child.
  * @private
  */
-_ol_structs_PriorityQueue_.prototype.getLeftChildIndex_ = function(index) {
+PriorityQueue.prototype.getLeftChildIndex_ = function(index) {
   return index * 2 + 1;
 };
 
@@ -138,7 +138,7 @@ _ol_structs_PriorityQueue_.prototype.getLeftChildIndex_ = function(index) {
  * @return {number} The index of the right child.
  * @private
  */
-_ol_structs_PriorityQueue_.prototype.getRightChildIndex_ = function(index) {
+PriorityQueue.prototype.getRightChildIndex_ = function(index) {
   return index * 2 + 2;
 };
 
@@ -149,7 +149,7 @@ _ol_structs_PriorityQueue_.prototype.getRightChildIndex_ = function(index) {
  * @return {number} The index of the parent.
  * @private
  */
-_ol_structs_PriorityQueue_.prototype.getParentIndex_ = function(index) {
+PriorityQueue.prototype.getParentIndex_ = function(index) {
   return (index - 1) >> 1;
 };
 
@@ -158,7 +158,7 @@ _ol_structs_PriorityQueue_.prototype.getParentIndex_ = function(index) {
  * Make this a heap. O(N).
  * @private
  */
-_ol_structs_PriorityQueue_.prototype.heapify_ = function() {
+PriorityQueue.prototype.heapify_ = function() {
   var i;
   for (i = (this.elements_.length >> 1) - 1; i >= 0; i--) {
     this.siftUp_(i);
@@ -169,7 +169,7 @@ _ol_structs_PriorityQueue_.prototype.heapify_ = function() {
 /**
  * @return {boolean} Is empty.
  */
-_ol_structs_PriorityQueue_.prototype.isEmpty = function() {
+PriorityQueue.prototype.isEmpty = function() {
   return this.elements_.length === 0;
 };
 
@@ -178,7 +178,7 @@ _ol_structs_PriorityQueue_.prototype.isEmpty = function() {
  * @param {string} key Key.
  * @return {boolean} Is key queued.
  */
-_ol_structs_PriorityQueue_.prototype.isKeyQueued = function(key) {
+PriorityQueue.prototype.isKeyQueued = function(key) {
   return key in this.queuedElements_;
 };
 
@@ -187,7 +187,7 @@ _ol_structs_PriorityQueue_.prototype.isKeyQueued = function(key) {
  * @param {T} element Element.
  * @return {boolean} Is queued.
  */
-_ol_structs_PriorityQueue_.prototype.isQueued = function(element) {
+PriorityQueue.prototype.isQueued = function(element) {
   return this.isKeyQueued(this.keyFunction_(element));
 };
 
@@ -196,7 +196,7 @@ _ol_structs_PriorityQueue_.prototype.isQueued = function(element) {
  * @param {number} index The index of the node to move down.
  * @private
  */
-_ol_structs_PriorityQueue_.prototype.siftUp_ = function(index) {
+PriorityQueue.prototype.siftUp_ = function(index) {
   var elements = this.elements_;
   var priorities = this.priorities_;
   var count = elements.length;
@@ -228,7 +228,7 @@ _ol_structs_PriorityQueue_.prototype.siftUp_ = function(index) {
  * @param {number} index The index of the node to move up.
  * @private
  */
-_ol_structs_PriorityQueue_.prototype.siftDown_ = function(startIndex, index) {
+PriorityQueue.prototype.siftDown_ = function(startIndex, index) {
   var elements = this.elements_;
   var priorities = this.priorities_;
   var element = elements[index];
@@ -252,7 +252,7 @@ _ol_structs_PriorityQueue_.prototype.siftDown_ = function(startIndex, index) {
 /**
  * FIXME empty description for jsdoc
  */
-_ol_structs_PriorityQueue_.prototype.reprioritize = function() {
+PriorityQueue.prototype.reprioritize = function() {
   var priorityFunction = this.priorityFunction_;
   var elements = this.elements_;
   var priorities = this.priorities_;
@@ -262,7 +262,7 @@ _ol_structs_PriorityQueue_.prototype.reprioritize = function() {
   for (i = 0; i < n; ++i) {
     element = elements[i];
     priority = priorityFunction(element);
-    if (priority == _ol_structs_PriorityQueue_.DROP) {
+    if (priority == PriorityQueue.DROP) {
       delete this.queuedElements_[this.keyFunction_(element)];
     } else {
       priorities[index] = priority;
@@ -273,4 +273,4 @@ _ol_structs_PriorityQueue_.prototype.reprioritize = function() {
   priorities.length = index;
   this.heapify_();
 };
-export default _ol_structs_PriorityQueue_;
+export default PriorityQueue;
diff --git a/test/spec/ol/structs/priorityqueue.test.js b/test/spec/ol/structs/priorityqueue.test.js
index ecd5868cfa..4c794b2d66 100644
--- a/test/spec/ol/structs/priorityqueue.test.js
+++ b/test/spec/ol/structs/priorityqueue.test.js
@@ -1,4 +1,4 @@
-import _ol_structs_PriorityQueue_ from '../../../../src/ol/structs/PriorityQueue.js';
+import PriorityQueue from '../../../../src/ol/structs/PriorityQueue.js';
 
 
 describe('ol.structs.PriorityQueue', function() {
@@ -11,7 +11,7 @@ describe('ol.structs.PriorityQueue', function() {
 
     var pq;
     beforeEach(function() {
-      pq = new _ol_structs_PriorityQueue_(identity, identity);
+      pq = new PriorityQueue(identity, identity);
     });
 
     it('is empty', function() {
@@ -39,8 +39,7 @@ describe('ol.structs.PriorityQueue', function() {
     var elements, pq;
     beforeEach(function() {
       elements = [];
-      pq = new _ol_structs_PriorityQueue_(
-          identity, identity);
+      pq = new PriorityQueue(identity, identity);
       var element, i;
       for (i = 0; i < 32; ++i) {
         element = Math.random();
@@ -65,7 +64,7 @@ describe('ol.structs.PriorityQueue', function() {
     var pq, target;
     beforeEach(function() {
       target = 0.5;
-      pq = new _ol_structs_PriorityQueue_(function(element) {
+      pq = new PriorityQueue(function(element) {
         return Math.abs(element - target);
       }, identity);
       var i;
@@ -103,7 +102,7 @@ describe('ol.structs.PriorityQueue', function() {
         if (i++ % 2 === 0) {
           return Math.abs(element - target);
         } else {
-          return _ol_structs_PriorityQueue_.DROP;
+          return PriorityQueue.DROP;
         }
       };
       pq.reprioritize();
@@ -123,8 +122,7 @@ describe('ol.structs.PriorityQueue', function() {
 
     var pq;
     beforeEach(function() {
-      pq = new _ol_structs_PriorityQueue_(
-          identity, identity);
+      pq = new PriorityQueue(identity, identity);
       pq.enqueue('a');
       pq.enqueue('b');
       pq.enqueue('c');
diff --git a/test/spec/ol/tilequeue.test.js b/test/spec/ol/tilequeue.test.js
index afd5512135..48fadd3f6b 100644
--- a/test/spec/ol/tilequeue.test.js
+++ b/test/spec/ol/tilequeue.test.js
@@ -3,7 +3,7 @@ import _ol_Tile_ from '../../../src/ol/Tile.js';
 import _ol_TileQueue_ from '../../../src/ol/TileQueue.js';
 import _ol_TileState_ from '../../../src/ol/TileState.js';
 import _ol_source_Image_ from '../../../src/ol/source/Image.js';
-import _ol_structs_PriorityQueue_ from '../../../src/ol/structs/PriorityQueue.js';
+import PriorityQueue from '../../../src/ol/structs/PriorityQueue.js';
 
 
 describe('ol.TileQueue', function() {
@@ -129,7 +129,7 @@ describe('ol.TileQueue', function() {
       var i = 0;
       tq.priorityFunction_ = function() {
         if ((i++) % 2 === 0) {
-          return _ol_structs_PriorityQueue_.DROP;
+          return PriorityQueue.DROP;
         }
         return Math.floor(Math.random() * 100);
       };