diff --git a/packages/html-reporter/src/filter.ts b/packages/html-reporter/src/filter.ts
index 280c9a566b..cb9c82ff32 100644
--- a/packages/html-reporter/src/filter.ts
+++ b/packages/html-reporter/src/filter.ts
@@ -176,7 +176,7 @@ function cacheSearchValues(test: TestCaseSummary & { [searchValuesSymbol]?: Sear
     line: String(test.location.line),
     column: String(test.location.column),
     labels: test.tags.map(tag => tag.toLowerCase()),
-    annotations: test.annotations.map(a => a.type.toLowerCase() + '=' + a.description?.toLocaleLowerCase())
+    annotations: test.annotations.map(a => a?.type?.toLowerCase() + '=' + a.description?.toLocaleLowerCase())
   };
   test[searchValuesSymbol] = searchValues;
   return searchValues;
diff --git a/packages/html-reporter/src/testCaseView.tsx b/packages/html-reporter/src/testCaseView.tsx
index e4ffa9c15b..77ba5fef32 100644
--- a/packages/html-reporter/src/testCaseView.tsx
+++ b/packages/html-reporter/src/testCaseView.tsx
@@ -46,7 +46,7 @@ export const TestCaseView: React.FC<{
   }, [test]);
 
   const visibleAnnotations = React.useMemo(() => {
-    return test?.annotations?.filter(annotation => !annotation.type.startsWith('_')) || [];
+    return test?.annotations?.filter(annotation => !annotation?.type?.startsWith('_')) || [];
   }, [test?.annotations]);
 
   return <div className='test-case-column vbox'>