diff --git a/transfer-engine.pro b/transfer-engine.pro
index caa06e1..ef8a2fc 100644
--- a/transfer-engine.pro
+++ b/transfer-engine.pro
@@ -1,6 +1,7 @@
 TEMPLATE = subdirs
 SUBDIRS  = lib src tests
 
+src.depends = lib
 tests.depends = lib
 
 # no daemon for Qt 4