diff --git a/gcc/objc/runtime.h b/gcc/objc/runtime.h
index b0a1e163a24..ab6af2912af 100644
--- a/gcc/objc/runtime.h
+++ b/gcc/objc/runtime.h
@@ -51,7 +51,8 @@ extern void __objc_register_selectors_from_class(Class*); /* (objc-sel.c) */
 extern void __objc_update_dispatch_table_for_class (Class*);/* (objc-msg.c) */
 extern void class_add_method_list(Class*, MethodList_t);
 
-void objc_error(id object, const char* fmt, va_list);
+extern void objc_error(id object, const char* fmt, va_list);
+extern void (*_objc_error)(id, const char*, va_list);
 
 /* True when class links has been resolved */     
 extern BOOL __objc_class_links_resolved;