diff --git a/src/ol/renderer/canvas/TileLayer.js b/src/ol/renderer/canvas/TileLayer.js
index 518a77a610..51fb12939f 100644
--- a/src/ol/renderer/canvas/TileLayer.js
+++ b/src/ol/renderer/canvas/TileLayer.js
@@ -362,7 +362,6 @@ class CanvasTileLayerRenderer extends CanvasLayerRenderer {
 
     this.manageTilePyramid(frameState, tileSource, tileGrid, pixelRatio,
       projection, extent, z, tileLayer.getPreload());
-    this.updateCacheSize_(frameState, tileSource);
     this.scheduleExpireCache(frameState, tileSource);
 
     this.postRender(context, frameState);
@@ -474,27 +473,6 @@ class CanvasTileLayerRenderer extends CanvasLayerRenderer {
     usedTiles[tileSourceKey][tile.getKey()] = true;
   }
 
-  /**
-   * Check if the cache is big enough, and increase its size if necessary.
-   * @param {import("../../PluggableMap.js").FrameState} frameState Frame state.
-   * @param {import("../../source/Tile.js").default} tileSource Tile source.
-   * @private
-   */
-  updateCacheSize_(frameState, tileSource) {
-    const tileSourceKey = getUid(tileSource);
-    let size = 0;
-    if (tileSourceKey in frameState.usedTiles) {
-      size += Object.keys(frameState.usedTiles[tileSourceKey]).length;
-    }
-    if (tileSourceKey in frameState.wantedTiles) {
-      size += Object.keys(frameState.wantedTiles[tileSourceKey]).length;
-    }
-    const tileCache = tileSource.tileCache;
-    if (tileCache.highWaterMark < size) {
-      tileCache.highWaterMark = size;
-    }
-  }
-
   /**
    * Manage tile pyramid.
    * This function performs a number of functions related to the tiles at the
diff --git a/test/spec/ol/renderer/canvas/tilelayer.test.js b/test/spec/ol/renderer/canvas/tilelayer.test.js
index d326d9d7d0..bf5a6c784e 100644
--- a/test/spec/ol/renderer/canvas/tilelayer.test.js
+++ b/test/spec/ol/renderer/canvas/tilelayer.test.js
@@ -78,15 +78,6 @@ describe('ol.renderer.canvas.TileLayer', function() {
       disposeMap(map);
     });
 
-    it('increases the cache size if necessary', function(done) {
-      const tileCache = layer.getSource().tileCache;
-      expect(tileCache.highWaterMark).to.be(1);
-      map.once('rendercomplete', function() {
-        expect(tileCache.highWaterMark).to.be(2);
-        done();
-      });
-    });
-
     it('respects the source\'s zDirection setting', function(done) {
       layer.getSource().zDirection = 1;
       map.getView().setZoom(5.8); // would lead to z6 tile request with the default zDirection