diff --git a/lib/nfs_v3.c b/lib/nfs_v3.c
index 9e98036..b21f133 100644
--- a/lib/nfs_v3.c
+++ b/lib/nfs_v3.c
@@ -4983,10 +4983,14 @@ nfs3_chdir_continue_internal(struct nfs_context *nfs,
                              struct nfs_cb_data *data)
 {
 	/* steal saved_path */
+#ifdef HAVE_MULTITHREADING
         nfs_mt_mutex_lock(&nfs->rpc->rpc_mutex);
+#endif
 	free(nfs->nfsi->cwd);
         nfs->nfsi->cwd = data->saved_path;
+#ifdef HAVE_MULTITHREADING
         nfs_mt_mutex_unlock(&nfs->rpc->rpc_mutex);
+#endif
 
 	data->saved_path = NULL;
 
diff --git a/lib/nfs_v4.c b/lib/nfs_v4.c
index f1a29d1..b016695 100644
--- a/lib/nfs_v4.c
+++ b/lib/nfs_v4.c
@@ -643,6 +643,7 @@ nfs4_op_commit(struct nfs_context *nfs, nfs_argop4 *op)
         return 1;
 }
 
+#ifdef HAVE_MULTITHREADING
 static int
 nfs4_op_release_lockowner(struct nfs_context *nfs, nfs_argop4 *op, struct nfsfh *fh)
 {
@@ -657,6 +658,7 @@ nfs4_op_release_lockowner(struct nfs_context *nfs, nfs_argop4 *op, struct nfsfh
         
         return 1;
 }
+#endif
 
 static int
 nfs4_op_close(struct nfs_context *nfs, nfs_argop4 *op, struct nfsfh *fh)
@@ -1687,10 +1689,14 @@ nfs4_chdir_1_cb(struct rpc_context *rpc, int status, void *command_data,
         }
 
         /* Ok, all good. Lets steal the path string. */
+#ifdef HAVE_MULTITHREADING
         nfs_mt_mutex_lock(&nfs->rpc->rpc_mutex);
+#endif
         free(nfs->nfsi->cwd);
         nfs->nfsi->cwd = data->path;
+#ifdef HAVE_MULTITHREADING
         nfs_mt_mutex_unlock(&nfs->rpc->rpc_mutex);
+#endif
 
         data->path = NULL;
 
@@ -2347,10 +2353,10 @@ nfs4_open_readlink_cb(struct rpc_context *rpc, int status, void *command_data,
 
 #ifdef HAVE_MULTITHREADING
         nfs_mt_mutex_lock(&data->nfs->nfsi->nfs4_open_mutex);
+#endif
         data->lock_owner = nfs->nfsi->open_counter++;
+#ifdef HAVE_MULTITHREADING
         nfs_mt_mutex_unlock(&data->nfs->nfsi->nfs4_open_mutex);
-#else
-        data->lock_owner = nfs->nfsi->open_counter++;
 #endif
         
         data->filler.func = nfs4_populate_open;
diff --git a/utils/nfs-ls.c b/utils/nfs-ls.c
index e75c379..a804095 100644
--- a/utils/nfs-ls.c
+++ b/utils/nfs-ls.c
@@ -165,7 +165,9 @@ int main(int argc, char *argv[])
 	struct client client;
 	struct statvfs stvfs;
 	struct nfs_url *url = NULL;
+#ifdef HAVE_MULTITHREADING
 	int mt_started = 0;
+#endif
 
 #ifdef WIN32
 	if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
@@ -247,6 +249,8 @@ int main(int argc, char *argv[])
  		fprintf(stderr, "Failed to mount nfs share : %s\n", nfs_get_error(nfs));
 		goto finished;
 	}
+
+#ifdef HAVE_MULTITHREADING
         /*
          * Before we can use multithreading we must initialize and
          * start the service thread.
@@ -256,6 +260,7 @@ int main(int argc, char *argv[])
                 exit(10);
         }
 	mt_started = 1;
+#endif
 	
 	process_dir(nfs, "", 16);
 
@@ -270,10 +275,12 @@ int main(int argc, char *argv[])
 
 	ret = 0;
 finished:
+#ifdef HAVE_MULTITHREADING
 	if (mt_started) {
 		printf("closing service thread\n");
 		nfs_mt_service_thread_stop(nfs);
 	}
+#endif
 	
 	if (ret > 0) {
 		print_usage();