diff --git a/src/kits/app/app.src b/src/kits/app/app.src
index 861e3556d3..e2ab2639a5 100644
--- a/src/kits/app/app.src
+++ b/src/kits/app/app.src
@@ -13,6 +13,7 @@ APP_KIT_SOURCE =
 	PropertyInfo.cpp
 	RegistrarDefs.cpp
 	RegistrarThread.cpp
+	RegistrarThreadManager.cpp
 	Roster.cpp
 	TokenSpace.cpp
 ;