diff --git a/auto/src/glew_tail.h b/auto/src/glew_tail.h
index 4f59b64..beccf04 100644
--- a/auto/src/glew_tail.h
+++ b/auto/src/glew_tail.h
@@ -33,7 +33,7 @@ GLEWAPI GLboolean glewContextIsSupported (const GLEWContext* ctx, const char* na
 
 #else /* GLEW_MX */
 
-GLEWAPI GLenum glewInit ();
+GLEWAPI GLenum glewInit (void);
 GLEWAPI GLboolean glewIsSupported (const char* name);
 #define glewIsExtensionSupported(x) glewIsSupported(x)