diff --git a/pkg/analyzer/lib/src/dart/analysis/index.dart b/pkg/analyzer/lib/src/dart/analysis/index.dart
index 8191ca47f03..6b5c09c5963 100644
--- a/pkg/analyzer/lib/src/dart/analysis/index.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/index.dart
@@ -426,6 +426,7 @@ class _IndexContributor extends GeneralizingAstVisitor {
     ElementKind elementKind = element?.kind;
     if (elementKind == null ||
         elementKind == ElementKind.DYNAMIC ||
+        elementKind == ElementKind.ERROR ||
         elementKind == ElementKind.LABEL ||
         elementKind == ElementKind.LOCAL_VARIABLE ||
         elementKind == ElementKind.PREFIX ||
diff --git a/pkg/analyzer/test/src/dart/analysis/index_test.dart b/pkg/analyzer/test/src/dart/analysis/index_test.dart
index 04048636e32..d090dbb8523 100644
--- a/pkg/analyzer/test/src/dart/analysis/index_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/index_test.dart
@@ -793,6 +793,16 @@ class A {
       ..isReferencedAt('method); // nq', false);
   }
 
+  test_isReferencedBy_MultiplyDefinedElement() async {
+    provider.newFile(_p('$testProject/a1.dart'), 'class A {}');
+    provider.newFile(_p('$testProject/a2.dart'), 'class A {}');
+    await _indexTestUnit('''
+import 'a1.dart';
+import 'a2.dart';
+A v = null;
+''');
+  }
+
   test_isReferencedBy_ParameterElement() async {
     await _indexTestUnit('''
 foo({var p}) {}