diff --git a/Makefile b/Makefile
index 4d78e622a8aaf8f79f2af3656df1b427639b950a..3104cf8db201536a000744bfd4f66b2909dcbcab 100644
--- a/Makefile
+++ b/Makefile
@@ -64,6 +64,7 @@ SUBDIR+=	orocos-dot_service
 SUBDIR+=	orocos-yarp_transport
 SUBDIR+=	osg-dae
 SUBDIR+=	pal-gazebo-plugins
+SUBDIR+=	pal-gazebo-worlds
 SUBDIR+=	pal-hardware-gazebo
 SUBDIR+=	pal-hardware-interfaces
 SUBDIR+=	pal-msgs