diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index bf8e146..138d498 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -18,6 +18,7 @@
  *      2 of the License, or (at your option) any later version.
  */
 
+#define pr_fmt(fmt) "IPv6: " fmt
 
 #include <linux/module.h>
 #include <linux/capability.h>
@@ -612,13 +613,11 @@
 	return ret;
 
 out_permanent:
-	printk(KERN_ERR "Attempt to override permanent protocol %d.\n",
-	       protocol);
+	pr_err("Attempt to override permanent protocol %d\n", protocol);
 	goto out;
 
 out_illegal:
-	printk(KERN_ERR
-	       "Ignoring attempt to register invalid socket type %d.\n",
+	pr_err("Ignoring attempt to register invalid socket type %d\n",
 	       p->type);
 	goto out;
 }
@@ -628,8 +627,7 @@
 inet6_unregister_protosw(struct inet_protosw *p)
 {
 	if (INET_PROTOSW_PERMANENT & p->flags) {
-		printk(KERN_ERR
-		       "Attempt to unregister permanent protocol %d.\n",
+		pr_err("Attempt to unregister permanent protocol %d\n",
 		       p->protocol);
 	} else {
 		spin_lock_bh(&inetsw6_lock);
@@ -1067,9 +1065,7 @@
 		INIT_LIST_HEAD(r);
 
 	if (disable_ipv6_mod) {
-		printk(KERN_INFO
-		       "IPv6: Loaded, but administratively disabled, "
-		       "reboot required to enable\n");
+		pr_info("Loaded, but administratively disabled, reboot required to enable\n");
 		goto out;
 	}