diff --git a/packages/core/src/reflection/reflection_capabilities.ts b/packages/core/src/reflection/reflection_capabilities.ts
index 57e58c2f18..ca3e397df9 100644
--- a/packages/core/src/reflection/reflection_capabilities.ts
+++ b/packages/core/src/reflection/reflection_capabilities.ts
@@ -18,9 +18,9 @@ import {GetterFn, MethodFn, SetterFn} from './types';
  * Attention: These regex has to hold even if the code is minified!
  */
 export const DELEGATE_CTOR = /^function\s+\S+\(\)\s*{[\s\S]+\.apply\(this,\s*arguments\)/;
-export const INHERITED_CLASS = /^class\s+[A-Za-z\d$_]*\s*extends\s+[A-Za-z\d$_]+\s*{/;
+export const INHERITED_CLASS = /^class\s+[A-Za-z\d$_]*\s*extends\s+[^{]+{/;
 export const INHERITED_CLASS_WITH_CTOR =
-    /^class\s+[A-Za-z\d$_]*\s*extends\s+[A-Za-z\d$_]+\s*{[\s\S]*constructor\s*\(/;
+    /^class\s+[A-Za-z\d$_]*\s*extends\s+[^{]+{[\s\S]*constructor\s*\(/;
 
 export class ReflectionCapabilities implements PlatformReflectionCapabilities {
   private _reflect: any;
diff --git a/packages/core/test/reflection/reflector_spec.ts b/packages/core/test/reflection/reflector_spec.ts
index d24ff79e92..a8c2080e39 100644
--- a/packages/core/test/reflection/reflector_spec.ts
+++ b/packages/core/test/reflection/reflector_spec.ts
@@ -194,6 +194,10 @@ class TestObj {
         const ChildWithCtor = `class ChildWithCtor extends Parent {\n` +
             `  constructor() { super(); }` +
             `}\n`;
+        const ChildNoCtorComplexBase = `class ChildNoCtor extends Parent['foo'].bar(baz) {}\n`;
+        const ChildWithCtorComplexBase = `class ChildWithCtor extends Parent['foo'].bar(baz) {\n` +
+            `  constructor() { super(); }` +
+            `}\n`;
         const ChildNoCtorPrivateProps = `class ChildNoCtorPrivateProps extends Parent {\n` +
             `  private x = 10;\n` +
             `}\n`;
@@ -204,6 +208,8 @@ class TestObj {
         expect(checkNoOwnMetadata(ChildNoCtor)).toBeTruthy();
         expect(checkNoOwnMetadata(ChildNoCtorPrivateProps)).toBeTruthy();
         expect(checkNoOwnMetadata(ChildWithCtor)).toBeFalsy();
+        expect(checkNoOwnMetadata(ChildNoCtorComplexBase)).toBeTruthy();
+        expect(checkNoOwnMetadata(ChildWithCtorComplexBase)).toBeFalsy();
       });
 
       it('should properly handle all class forms', () => {