Index: uspace/app/tester/Makefile
===================================================================
--- uspace/app/tester/Makefile	(revision 855e0d811a98ab099ac72bbad3f412912d809f2c)
+++ uspace/app/tester/Makefile	(revision b38dfd8028d6cec3849c0eccfe3dff997f218265)
@@ -50,5 +50,6 @@
 	ipc/connect.c \
 	loop/loop1.c \
-	mm/malloc1.c
+	mm/malloc1.c \
+	hw/serial/serial1.c
 
 include $(USPACE_PREFIX)/Makefile.common