diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index d5f5efaf2b26..4e4d33204376 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -189,7 +189,6 @@ extern ssize_t nfs4_listxattr(struct dentry *, char *, size_t);
 
 
 /* nfs4proc.c */
-extern int nfs4_map_errors(int err);
 extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *);
 extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct rpc_cred *);
 extern int nfs4_proc_async_renew(struct nfs_client *, struct rpc_cred *);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 49eebe25bbad..8dde84b988d9 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -67,7 +67,7 @@ static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct
 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
 
 /* Prevent leaks of NFSv4 errors into userland */
-int nfs4_map_errors(int err)
+static int nfs4_map_errors(int err)
 {
 	if (err < -1000) {
 		dprintk("%s could not handle NFSv4 error %d\n",