diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index 3f03c1431e5..ff13a447275 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -2027,6 +2027,7 @@ namespace ts {
 
     export interface ClassDeclaration extends ClassLikeDeclarationBase, DeclarationStatement {
         kind: SyntaxKind.ClassDeclaration;
+        /** May be undefined in `export default class { ... }`. */
         name?: Identifier;
     }
 
diff --git a/src/services/findAllReferences.ts b/src/services/findAllReferences.ts
index 6869e7331c3..07cd2c683a9 100644
--- a/src/services/findAllReferences.ts
+++ b/src/services/findAllReferences.ts
@@ -990,7 +990,7 @@ namespace ts.FindAllReferences.Core {
         const pusher = () => state.referenceAdder(search.symbol, search.location);
 
         if (isClassLike(referenceLocation.parent)) {
-            Debug.assert(referenceLocation.parent.name === referenceLocation);
+            Debug.assert(referenceLocation.kind === SyntaxKind.DefaultKeyword || referenceLocation.parent.name === referenceLocation);
             // This is the class declaration containing the constructor.
             findOwnConstructorReferences(search.symbol, sourceFile, pusher());
         }
diff --git a/tests/baselines/reference/api/tsserverlibrary.d.ts b/tests/baselines/reference/api/tsserverlibrary.d.ts
index fcd9d04d06d..60c38f22243 100644
--- a/tests/baselines/reference/api/tsserverlibrary.d.ts
+++ b/tests/baselines/reference/api/tsserverlibrary.d.ts
@@ -1266,6 +1266,7 @@ declare namespace ts {
     }
     interface ClassDeclaration extends ClassLikeDeclarationBase, DeclarationStatement {
         kind: SyntaxKind.ClassDeclaration;
+        /** May be undefined in `export default class { ... }`. */
         name?: Identifier;
     }
     interface ClassExpression extends ClassLikeDeclarationBase, PrimaryExpression {
diff --git a/tests/baselines/reference/api/typescript.d.ts b/tests/baselines/reference/api/typescript.d.ts
index f9a6bdd55e8..8014017d0c0 100644
--- a/tests/baselines/reference/api/typescript.d.ts
+++ b/tests/baselines/reference/api/typescript.d.ts
@@ -1266,6 +1266,7 @@ declare namespace ts {
     }
     interface ClassDeclaration extends ClassLikeDeclarationBase, DeclarationStatement {
         kind: SyntaxKind.ClassDeclaration;
+        /** May be undefined in `export default class { ... }`. */
         name?: Identifier;
     }
     interface ClassExpression extends ClassLikeDeclarationBase, PrimaryExpression {
diff --git a/tests/cases/fourslash/findAllRefsExportDefaultClassConstructor.ts b/tests/cases/fourslash/findAllRefsExportDefaultClassConstructor.ts
new file mode 100644
index 00000000000..4cd0ab1ce3d
--- /dev/null
+++ b/tests/cases/fourslash/findAllRefsExportDefaultClassConstructor.ts
@@ -0,0 +1,5 @@
+////export default class {
+////    [|constructor|]() {}
+////}
+
+verify.singleReferenceGroup("constructor default(): default");