diff --git a/src/osg/Texture2DArray.cpp b/src/osg/Texture2DArray.cpp
index 3ec20edc6..d6355042e 100644
--- a/src/osg/Texture2DArray.cpp
+++ b/src/osg/Texture2DArray.cpp
@@ -559,11 +559,6 @@ void Texture2DArray::Extensions::glTexImage3D( GLenum target, GLint level, GLenu
 {
     if (_glTexImage3D)
     {
-        typedef void (APIENTRY * GLTexImage3DProc)      ( GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
-        typedef void (APIENTRY * GLTexSubImage3DProc)   ( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *pixels);
-        typedef void (APIENTRY * CompressedTexImage3DArbProc) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const GLvoid *data);
-        typedef void (APIENTRY * CompressedTexSubImage3DArbProc) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const GLvoid *data);
-        typedef void (APIENTRY * GLCopyTexSubImageProc) ( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height );
         _glTexImage3D( target, level, internalFormat, width, height, depth, border, format, type, pixels);
     }
     else