diff --git a/src/util/offscreen_canvas_supported.ts b/src/util/offscreen_canvas_supported.ts
index 44ddadc559..8aa07499cc 100644
--- a/src/util/offscreen_canvas_supported.ts
+++ b/src/util/offscreen_canvas_supported.ts
@@ -2,7 +2,7 @@ let supportsOffscreenCanvas: boolean | undefined | null;
 
 export default function offscreenCanvasSupported(): boolean {
     if (supportsOffscreenCanvas == null) {
-        supportsOffscreenCanvas = OffscreenCanvas &&
+        supportsOffscreenCanvas = typeof OffscreenCanvas !== 'undefined' &&
             new OffscreenCanvas(1, 1).getContext('2d') &&
             typeof createImageBitmap === 'function';
     }