diff --git a/include/osg/TexGenNode b/include/osg/TexGenNode
index 51c44227a..8f33afb3e 100644
--- a/include/osg/TexGenNode
+++ b/include/osg/TexGenNode
@@ -60,6 +60,8 @@ class OSG_EXPORT TexGenNode : public Group
         /** Get the const TexGen. */
         inline const TexGen* getTexGen() const { return _texgen.get(); }
 
+        /** Set whether to use a mutex to ensure ref() and unref() are thread safe.*/
+        virtual void setThreadSafeRefUnref(bool threadSafe);
 
     protected:
 
diff --git a/src/osg/TexGenNode.cpp b/src/osg/TexGenNode.cpp
index e10ad5d3f..05c4ee4bf 100644
--- a/src/osg/TexGenNode.cpp
+++ b/src/osg/TexGenNode.cpp
@@ -56,3 +56,11 @@ void TexGenNode::setTexGen(TexGen* texgen)
 {
     _texgen = texgen;
 }
+
+
+void TexGenNode::setThreadSafeRefUnref(bool threadSafe)
+{
+    Group::setThreadSafeRefUnref(threadSafe);
+
+    if (_texgen.valid()) _texgen->setThreadSafeRefUnref(threadSafe);
+}