diff --git a/src/osg/ColorMatrix.cpp b/src/osg/ColorMatrix.cpp
index ab79f8920..4e6c96ddf 100644
--- a/src/osg/ColorMatrix.cpp
+++ b/src/osg/ColorMatrix.cpp
@@ -1,6 +1,6 @@
+#include <osg/GLExtensions>
 #include <osg/ColorMatrix>
 #include <osg/GL>
-#include <osg/GLExtensions>
 
 using namespace osg;
 
diff --git a/src/osg/Fog.cpp b/src/osg/Fog.cpp
index 7073d8c10..f9897691d 100644
--- a/src/osg/Fog.cpp
+++ b/src/osg/Fog.cpp
@@ -1,5 +1,5 @@
-#include <osg/Fog>
 #include <osg/GLExtensions>
+#include <osg/Fog>
 
 using namespace osg;
 
diff --git a/src/osg/GLExtensions.cpp b/src/osg/GLExtensions.cpp
index e863ed9ca..377227446 100644
--- a/src/osg/GLExtensions.cpp
+++ b/src/osg/GLExtensions.cpp
@@ -1,7 +1,6 @@
-
+#include <osg/GLExtensions>
 #include <osg/GL>
 #include <osg/GLU>
-#include <osg/GLExtensions>
 #include <osg/Notify>
 
 
diff --git a/src/osg/TexEnv.cpp b/src/osg/TexEnv.cpp
index 47fceb072..72c84c5bb 100644
--- a/src/osg/TexEnv.cpp
+++ b/src/osg/TexEnv.cpp
@@ -1,5 +1,5 @@
-#include <osg/TexEnv>
 #include <osg/GLExtensions>
+#include <osg/TexEnv>
 
 using namespace osg;