diff --git a/examples/osgoccluder/osgoccluder.cpp b/examples/osgoccluder/osgoccluder.cpp
index 0e093a2e4..730a56b69 100644
--- a/examples/osgoccluder/osgoccluder.cpp
+++ b/examples/osgoccluder/osgoccluder.cpp
@@ -6,6 +6,7 @@
 #include <osg/Group>
 #include <osg/Notify>
 #include <osg/LineSegment>
+#include <osg/io_utils>
 
 #include <osgDB/Registry>
 #include <osgDB/ReadFile>
diff --git a/examples/osgpick/osgpick.cpp b/examples/osgpick/osgpick.cpp
index b4c7268f5..012af5f25 100644
--- a/examples/osgpick/osgpick.cpp
+++ b/examples/osgpick/osgpick.cpp
@@ -25,6 +25,7 @@
 #include <osg/Depth>
 #include <osg/Projection>
 #include <osg/MatrixTransform>
+#include <osg/io_utils>
 
 #include <osgText/Text>
 
diff --git a/examples/osgunittests/osgunittests.cpp b/examples/osgunittests/osgunittests.cpp
index 4de89227d..fcb1a5d83 100644
--- a/examples/osgunittests/osgunittests.cpp
+++ b/examples/osgunittests/osgunittests.cpp
@@ -4,6 +4,7 @@
 
 #include <osg/Vec3>
 #include <osg/Matrix>
+#include <osg/io_utils>
 
 #include <iostream>