diff --git a/src/kits/app/app.src b/src/kits/app/app.src
index 4f2432311a..8195dd91a6 100644
--- a/src/kits/app/app.src
+++ b/src/kits/app/app.src
@@ -28,5 +28,6 @@ APP_KIT_SOURCE =
 	RegistrarThreadManager.cpp
 	Roster.cpp
 	RosterPrivate.cpp
+	Session.cpp
 	TokenSpace.cpp
 ;