diff --git a/src/osgPlugins/dae/daeWriter.h b/src/osgPlugins/dae/daeWriter.h
index 3687d4717..fbea05f9c 100644
--- a/src/osgPlugins/dae/daeWriter.h
+++ b/src/osgPlugins/dae/daeWriter.h
@@ -17,6 +17,7 @@
 #include <map>
 #include <stack>
 
+#include <osg/io_utils>
 #include <osg/Node>
 #include <osg/Geode>
 #include <osg/Geometry>