diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 0d1bc61..22c49c0 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1006,12 +1006,14 @@
 			string = match_strdup(args);
 			if (string == NULL)
 				goto out_nomem;
+			kfree(mnt->client_address);
 			mnt->client_address = string;
 			break;
 		case Opt_mounthost:
 			string = match_strdup(args);
 			if (string == NULL)
 				goto out_nomem;
+			kfree(mnt->mount_server.hostname);
 			mnt->mount_server.hostname = string;
 			break;
 		case Opt_mountaddr: