diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 43b77702e..3260ac6ce 100755
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2888,7 +2888,7 @@ static struct ctl_table vm_table[] = {
 		.procname	= "dirty_background_bytes",
 		.data		= &dirty_background_bytes,
 		.maxlen		= sizeof(dirty_background_bytes),
-		.mode		= 0644,
+		.mode		= 0444,
 		.proc_handler	= dirty_background_bytes_handler,
 		.extra1		= &one_ul,
 	},
@@ -2905,7 +2905,7 @@ static struct ctl_table vm_table[] = {
 		.procname	= "dirty_bytes",
 		.data		= &vm_dirty_bytes,
 		.maxlen		= sizeof(vm_dirty_bytes),
-		.mode		= 0644,
+		.mode		= 0444,
 		.proc_handler	= dirty_bytes_handler,
 		.extra1		= &dirty_bytes_min,
 	},