Index: /trunk/src/VBox/Additions/common/VBoxService/Makefile.kmk
===================================================================
--- /trunk/src/VBox/Additions/common/VBoxService/Makefile.kmk	(revision 78450)
+++ /trunk/src/VBox/Additions/common/VBoxService/Makefile.kmk	(revision 78451)
@@ -163,5 +163,5 @@
 	VBoxService-win.cpp
 
-VBoxService_SOURCES.os2   = \
+VBoxService_SOURCES.os2  += \
 	VBoxService-os2.def