diff --git a/tests/Go/Instrument/Transformer/_files/class-woven.php b/tests/Go/Instrument/Transformer/_files/class-woven.php
index <HASH>..<HASH> 100644
--- a/tests/Go/Instrument/Transformer/_files/class-woven.php
+++ b/tests/Go/Instrument/Transformer/_files/class-woven.php
@@ -13,7 +13,7 @@ class TestClass__AopProxied {
 }
 
 
-class TestClass extends TestClass__AopProxied
+class TestClass extends TestClass__AopProxied implements \Go\Aop\Proxy
 {
 
 
diff --git a/tests/Go/Instrument/Transformer/_files/final-class-woven.php b/tests/Go/Instrument/Transformer/_files/final-class-woven.php
index <HASH>..<HASH> 100644
--- a/tests/Go/Instrument/Transformer/_files/final-class-woven.php
+++ b/tests/Go/Instrument/Transformer/_files/final-class-woven.php
@@ -12,7 +12,7 @@ class TestFinalClass__AopProxied {
     protected static function protectedStaticMethod() {}
 }
 
-final class TestFinalClass extends TestFinalClass__AopProxied
+final class TestFinalClass extends TestFinalClass__AopProxied implements \Go\Aop\Proxy
 {
 
     /**
Fixrd tests. Added a proxy interface to the concrete class