diff --git a/include/GL/glxew.h b/include/GL/glxew.h
index 0ac521e..b4ff6bc 100644
--- a/include/GL/glxew.h
+++ b/include/GL/glxew.h
@@ -903,7 +903,6 @@ typedef GLXPixmap ( * PFNGLXCREATEGLXPIXMAPMESAPROC) (Display* dpy, XVisualInfo
 #define GLX_RENDERER_OPENGL_COMPATIBILITY_PROFILE_VERSION_MESA 0x818B
 #define GLX_RENDERER_OPENGL_ES_PROFILE_VERSION_MESA 0x818C
 #define GLX_RENDERER_OPENGL_ES2_PROFILE_VERSION_MESA 0x818D
-#define GLX_RENDERER_ID_MESA 0x818E
 
 typedef Bool ( * PFNGLXQUERYCURRENTRENDERERINTEGERMESAPROC) (int attribute, unsigned int* value);
 typedef const char* ( * PFNGLXQUERYCURRENTRENDERERSTRINGMESAPROC) (int attribute);