Index: sbin/mount_nfs/mount_nfs.c
===================================================================
--- sbin/mount_nfs/mount_nfs.c
+++ sbin/mount_nfs/mount_nfs.c
@@ -476,7 +476,8 @@
 	build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
 
 	if (nmount(iov, iovlen, 0))
-		err(1, "%s, %s", mntpath, errmsg);
+		err(1, "nmount: %s%s%s", mntpath, errmsg[0] ? ", " : "",
+		    errmsg);
 
 	exit(0);
 }