diff --git a/src/kits/app/app.src b/src/kits/app/app.src
index e2ab2639a5..f7755de2dc 100644
--- a/src/kits/app/app.src
+++ b/src/kits/app/app.src
@@ -11,6 +11,7 @@ APP_KIT_SOURCE =
 	MessageQueue.cpp
 	Messenger.cpp
 	PropertyInfo.cpp
+	PortLink.cpp
 	RegistrarDefs.cpp
 	RegistrarThread.cpp
 	RegistrarThreadManager.cpp