diff --git a/include/osg/Plane b/include/osg/Plane
index edd768548..053eae247 100644
--- a/include/osg/Plane
+++ b/include/osg/Plane
@@ -206,9 +206,6 @@ class OSG_EXPORT Plane
             calculateUpperLowerBBCorners();
         }
 
-        friend inline std::ostream& operator << (std::ostream& output, const Plane& pl);
-
-
     protected:
 
 	Vec4                _fv;
@@ -220,15 +217,6 @@ class OSG_EXPORT Plane
 
 };
 
-inline std::ostream& operator << (std::ostream& output, const Plane& pl)
-{
-    output << pl._fv[0] << " "
-	   << pl._fv[1] << " "
-	   << pl._fv[2] << " "
-	   << pl._fv[3];
-    return output; 	// to enable cascading
-}
-
 }	// end of namespace
 
 #endif 
diff --git a/include/osg/Quat b/include/osg/Quat
index 42c0f8c66..67cccbdb1 100644
--- a/include/osg/Quat
+++ b/include/osg/Quat
@@ -383,22 +383,11 @@ class OSG_EXPORT Quat
             uuv *= 2.0f; 
             return v + uv + uuv;
         }
-               
-        friend inline std::ostream& operator << (std::ostream& output, const Quat& vec);
         
     protected:
     
 };    // end of class prototype
 
-inline std::ostream& operator << (std::ostream& output, const Quat& vec)
-{
-    output << vec._v[0] << " "
-       << vec._v[1] << " "
-       << vec._v[2] << " "
-       << vec._v[3];
-    return output;     // to enable cascading
-}
-
 }    // end of namespace
 
 #endif 
diff --git a/include/osg/io_utils b/include/osg/io_utils
index 1d0016693..a232e786f 100644
--- a/include/osg/io_utils
+++ b/include/osg/io_utils
@@ -21,6 +21,7 @@
 #include <osg/UByte4>
 #include <osg/Matrixf>
 #include <osg/Matrixd>
+#include <osg/Plane>
 
 namespace osg {
 
@@ -166,5 +167,28 @@ inline std::ostream& operator << (std::ostream& output, const UByte4& vec)
 }
 
 
+//////////////////////////////////////////////////////////////////////////
+// Quat steaming operators.
+inline std::ostream& operator << (std::ostream& output, const Quat& vec)
+{
+    output << vec._v[0] << " "
+       << vec._v[1] << " "
+       << vec._v[2] << " "
+       << vec._v[3];
+    return output;     // to enable cascading
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+// Plane steaming operators.
+inline std::ostream& operator << (std::ostream& output, const Plane& pl)
+{
+    output << pl[0] << " "
+	   << pl[1] << " "
+	   << pl[2] << " "
+	   << pl[3];
+    return output; 	// to enable cascading
+}
+
 }    // end of namespace osg
 #endif
diff --git a/src/osg/TexGen.cpp b/src/osg/TexGen.cpp
index 58ba0c27a..abd31e299 100644
--- a/src/osg/TexGen.cpp
+++ b/src/osg/TexGen.cpp
@@ -12,6 +12,7 @@
 */
 #include <osg/TexGen>
 #include <osg/Notify>
+#include <osg/io_utils>
 
 using namespace osg;
 
diff --git a/src/osgPlugins/osg/TexGen.cpp b/src/osgPlugins/osg/TexGen.cpp
index e37b557e2..d9447c1cf 100644
--- a/src/osgPlugins/osg/TexGen.cpp
+++ b/src/osgPlugins/osg/TexGen.cpp
@@ -3,6 +3,7 @@
 #endif
 
 #include "osg/TexGen"
+#include "osg/io_utils"
 
 #include "osgDB/Registry"
 #include "osgDB/Input"