diff --git a/Make/makedirdefs b/Make/makedirdefs
index 3705b8bbb..782780ebf 100644
--- a/Make/makedirdefs
+++ b/Make/makedirdefs
@@ -192,6 +192,7 @@ EXAMPLE_DIRS = \
 	osgversion\
 	osgvertexprogram\
 	osgviewer\
+	osgvolume\
 	osgwindows\
 
 ifeq ($(GDAL_INSTALLED),yes)