diff --git a/conformance/conformance_php.php b/conformance/conformance_php.php
index cc6d4b9f0..80860c950 100755
--- a/conformance/conformance_php.php
+++ b/conformance/conformance_php.php
@@ -8,6 +8,7 @@ require_once("Conformance/TestCategory.php");
 require_once("Protobuf_test_messages/Proto3/ForeignMessage.php");
 require_once("Protobuf_test_messages/Proto3/ForeignEnum.php");
 require_once("Protobuf_test_messages/Proto3/TestAllTypesProto3.php");
+require_once("Protobuf_test_messages/Proto3/TestAllTypesProto3/AliasedEnum.php");
 require_once("Protobuf_test_messages/Proto3/TestAllTypesProto3/NestedMessage.php");
 require_once("Protobuf_test_messages/Proto3/TestAllTypesProto3/NestedEnum.php");