diff --git a/mm/ksm.c b/mm/ksm.c
index fb75902..6b2e337 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -2310,7 +2310,7 @@
 
 	ksm_thread = kthread_run(ksm_scan_thread, NULL, "ksmd");
 	if (IS_ERR(ksm_thread)) {
-		printk(KERN_ERR "ksm: creating kthread failed\n");
+		pr_err("ksm: creating kthread failed\n");
 		err = PTR_ERR(ksm_thread);
 		goto out_free;
 	}
@@ -2318,7 +2318,7 @@
 #ifdef CONFIG_SYSFS
 	err = sysfs_create_group(mm_kobj, &ksm_attr_group);
 	if (err) {
-		printk(KERN_ERR "ksm: register sysfs failed\n");
+		pr_err("ksm: register sysfs failed\n");
 		kthread_stop(ksm_thread);
 		goto out_free;
 	}