diff --git a/Makefile.am b/Makefile.am
index 754e2deb..d8a7543f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -97,7 +97,7 @@ unittest_sources = \
 	src/event/client_events.c src/event/client_events.h \
 	src/ui/tray.h src/ui/tray.c \
 	tests/unittests/xmpp/stub_xmpp.c \
-	tests/unittests/ui/stub_ui.c \
+	tests/unittests/ui/stub_ui.c tests/unittests/ui/stub_ui.h \
 	tests/unittests/log/stub_log.c \
 	tests/unittests/config/stub_accounts.c \
 	tests/unittests/tools/stub_http_upload.c \