diff --git a/psmisc-22.13-nfs4fuser.patch b/psmisc-22.13-nfs4fuser.patch
index d79d92a..bd3c12e 100644
--- a/psmisc-22.13-nfs4fuser.patch
+++ b/psmisc-22.13-nfs4fuser.patch
@@ -542,7 +542,7 @@
 +		use = &name[0];
 +	}
 +
-+	if (*use != '/') {	    /* sepcial file (socket, pipe, inotify) */
++	if (*use != '/') {		/* sepcial file (socket, pipe, inotify) */
 +		struct stat st;
 +		if (timeout(stat, path, &st, 5) != 0)
 +			return (dev_t)-1;
@@ -553,8 +553,8 @@
 +		mntinfo_t *mnt = list_entry(ptr, mntinfo_t);
 +		if (nlen < mnt->nlen)
 +			continue;
-+		if (mnt->nlen > 1 && use[mnt->nlen] != '\0' && use[mnt->nlen] != '/')
-+			continue;
++		if (mnt->nlen == 1)	/* root fs is the last entry */
++			return mnt->dev;
 +		if (strncmp(use, mnt->mpoint, mnt->nlen) == 0)
 +			return mnt->dev;
 +	}