diff --git a/test/playwright/SharedRendererTests.ts b/test/playwright/SharedRendererTests.ts
index c0bb531f..1c5c497f 100644
--- a/test/playwright/SharedRendererTests.ts
+++ b/test/playwright/SharedRendererTests.ts
@@ -1417,7 +1417,7 @@ async function getFrameDetails(ctx: ITestContext): Promise<{ cols: number, rows:
   frameDetails = {
     cols: await ctx.proxy.cols,
     rows: await ctx.proxy.rows,
-    decoded: (await decodePng(buffer, { force32: true })).image
+    decoded: (await decodePng(new Uint8Array(buffer), { force32: true })).image
   };
   return frameDetails;
 }