diff --git a/include/linux/utsname.h b/include/linux/utsname.h
index 51ad167..923db99 100644
--- a/include/linux/utsname.h
+++ b/include/linux/utsname.h
@@ -48,7 +48,8 @@
 	kref_get(&ns->kref);
 }
 
-extern struct uts_namespace *copy_utsname(int flags, struct uts_namespace *ns);
+extern struct uts_namespace *copy_utsname(unsigned long flags,
+					struct uts_namespace *ns);
 extern void free_uts_ns(struct kref *kref);
 
 static inline void put_uts_ns(struct uts_namespace *ns)