diff --git a/src/ol/render/canvas/ReplayGroup.js b/src/ol/render/canvas/ReplayGroup.js
index 21d31ce01c..d8d7df604b 100644
--- a/src/ol/render/canvas/ReplayGroup.js
+++ b/src/ol/render/canvas/ReplayGroup.js
@@ -204,7 +204,7 @@ export function getCircleArray(radius) {
  * @param {CanvasRenderingContext2D} context Context.
  * @param {number} rotation Rotation.
  */
-CanvasReplayGroup.replayDeclutter = function(declutterReplays, context, rotation) {
+export function replayDeclutter(declutterReplays, context, rotation) {
   const zs = Object.keys(declutterReplays).map(Number).sort(numberSafeCompareFunction);
   const skippedFeatureUids = {};
   for (let z = 0, zz = zs.length; z < zz; ++z) {
@@ -215,7 +215,7 @@ CanvasReplayGroup.replayDeclutter = function(declutterReplays, context, rotation
       replay.replay(context, transform, rotation, skippedFeatureUids);
     }
   }
-};
+}
 
 
 /**
diff --git a/src/ol/renderer/canvas/VectorTileLayer.js b/src/ol/renderer/canvas/VectorTileLayer.js
index 0550e8f86a..51cc0f6f5b 100644
--- a/src/ol/renderer/canvas/VectorTileLayer.js
+++ b/src/ol/renderer/canvas/VectorTileLayer.js
@@ -14,7 +14,7 @@ import {equivalent as equivalentProjection} from '../../proj.js';
 import Units from '../../proj/Units.js';
 import ReplayType from '../../render/ReplayType.js';
 import {labelCache, rotateAtOffset} from '../../render/canvas.js';
-import CanvasReplayGroup from '../../render/canvas/ReplayGroup.js';
+import CanvasReplayGroup, {replayDeclutter} from '../../render/canvas/ReplayGroup.js';
 import {ORDER} from '../../render/replay.js';
 import RendererType from '../Type.js';
 import CanvasTileLayerRenderer from '../canvas/TileLayer.js';
@@ -436,7 +436,7 @@ CanvasVectorTileLayerRenderer.prototype.postCompose = function(context, frameSta
     }
   }
   if (declutterReplays) {
-    CanvasReplayGroup.replayDeclutter(declutterReplays, context, rotation);
+    replayDeclutter(declutterReplays, context, rotation);
   }
   if (rotation) {
     rotateAtOffset(context, rotation,