diff --git a/include/osg/Texture3D b/include/osg/Texture3D
index 5f7147225..4362636d8 100644
--- a/include/osg/Texture3D
+++ b/include/osg/Texture3D
@@ -17,7 +17,7 @@
 #include <osg/Texture>
 
 #ifndef GL_MAX_3D_TEXTURE_SIZE
-#define GL_MAX_3D_TEXTURE_SIZE 0x8073
+    #define GL_MAX_3D_TEXTURE_SIZE      0x8073
 #endif
 
 namespace osg {