diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index c325b18..ccf2e0d 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -395,7 +395,7 @@
 	     &&(fl1->fl_type  == fl2->fl_type || fl2->fl_type == F_UNLCK);
 }
 
-extern struct lock_manager_operations nlmsvc_lock_operations;
+extern const struct lock_manager_operations nlmsvc_lock_operations;
 
 #endif /* __KERNEL__ */