diff --git a/org.eclipse.xtext.ide.tests/testlang-src/org/eclipse/xtext/ide/tests/testlanguage/GenerateTestLanguage.mwe2 b/org.eclipse.xtext.ide.tests/testlang-src/org/eclipse/xtext/ide/tests/testlanguage/GenerateTestLanguage.mwe2
index ce257cd56..754f291d7 100644
--- a/org.eclipse.xtext.ide.tests/testlang-src/org/eclipse/xtext/ide/tests/testlanguage/GenerateTestLanguage.mwe2
+++ b/org.eclipse.xtext.ide.tests/testlang-src/org/eclipse/xtext/ide/tests/testlanguage/GenerateTestLanguage.mwe2
@@ -114,6 +114,7 @@ Workflow {
 			}
 			formatter = {
 				generateStub = true
+				generateXtendStub = true
 			}
 		}
 		language = StandardLanguage {