diff --git a/auto/src/glew_tail.h b/auto/src/glew_tail.h
index f2f002e..647c4cf 100644
--- a/auto/src/glew_tail.h
+++ b/auto/src/glew_tail.h
@@ -55,6 +55,7 @@ GLEWAPI const GLubyte* glewGetString (GLenum name);
 #undef GLEW_APIENTRY_DEFINED
 #undef APIENTRY
 #undef GLAPIENTRY
+#define GLAPIENTRY
 #endif
 
 #ifdef GLEW_CALLBACK_DEFINED