diff --git a/MOBILISIS-Calculator.pro b/MOBILISIS-Calculator.pro
index 456af72..1d8a8d8 100644
--- a/MOBILISIS-Calculator.pro
+++ b/MOBILISIS-Calculator.pro
@@ -3,3 +3,7 @@ CONFIG += ordered
 SUBDIRS = library main
 
 main.depends = library
+
+contains( CONFIG, PTU5_YOCTO ) {
+    SUBDIRS = library
+}
\ No newline at end of file