diff --git a/tests/blocksuite/e2e/utils/asserts.ts b/tests/blocksuite/e2e/utils/asserts.ts
index 8b112e2cb9..942ede1c09 100644
--- a/tests/blocksuite/e2e/utils/asserts.ts
+++ b/tests/blocksuite/e2e/utils/asserts.ts
@@ -962,7 +962,7 @@ export async function assertEdgelessColorSameWithHexColor(
   edgelessColor: string,
   hexColor: `#${string}`
 ) {
-  const themeColor = edgelessColor.startsWith('---')
+  const themeColor = edgelessColor.startsWith('--')
     ? await getCurrentThemeCSSPropertyValue(page, edgelessColor)
     : edgelessColor;
   expect(themeColor).toBeTruthy();