diff --git a/VisualStudio/osg/osg.dsp b/VisualStudio/osg/osg.dsp
index f2928cb24..5bb0f8996 100755
--- a/VisualStudio/osg/osg.dsp
+++ b/VisualStudio/osg/osg.dsp
@@ -264,7 +264,7 @@ SOURCE=..\..\src\osg\GraphicsContext.cpp
 # End Source File
 # Begin Source File
 
-SOURCE=..\..\src\osg\GraphicsTread.cpp
+SOURCE=..\..\src\osg\GraphicsThread.cpp
 # End Source File
 # Begin Source File
 
diff --git a/include/osg/GraphicsThread b/include/osg/GraphicsThread
index afe49778b..e4cba3f4b 100644
--- a/include/osg/GraphicsThread
+++ b/include/osg/GraphicsThread
@@ -76,7 +76,7 @@ class Block: public osg::Referenced {
 };
 
 /** GraphicsThread is a helper class for running OpenGL GraphicsOperation within a single thread assigned to a specific GraphicsContext.*/
-class GraphicsThread : public Referenced, public OpenThreads::Thread
+class OSG_EXPORT GraphicsThread : public Referenced, public OpenThreads::Thread
 {
     public:
         GraphicsThread();