diff --git a/app/modules/ws2p/index.ts b/app/modules/ws2p/index.ts
index a54d265f1a8b3368f99b05333d5e8f83b929ecaa..c91451e46a817b5e3576b2d284ae85c2a1b14219 100644
--- a/app/modules/ws2p/index.ts
+++ b/app/modules/ws2p/index.ts
@@ -16,8 +16,8 @@ export const WS2PDependency = {
     cliOptions: [
       { value: '--ws2p-upnp',                  desc: 'Use UPnP to open remote port.' },
       { value: '--ws2p-noupnp',                desc: 'Do not use UPnP to open remote port.' },
-      { value: '--ws2p-host <host>',           desc: 'Port to listen to.' },
-      { value: '--ws2p-port <port>',           desc: 'Host to listen to.', parser: (val:string) => parseInt(val) },
+      { value: '--ws2p-host <host>',           desc: 'Host to listen to.' },
+      { value: '--ws2p-port <port>',           desc: 'Port to listen to.', parser: (val:string) => parseInt(val) },
       { value: '--ws2p-remote-host <address>', desc: 'Availabily host.' },
       { value: '--ws2p-remote-port <port>',    desc: 'Availabily port.', parser: (val:string) => parseInt(val) },
       { value: '--ws2p-remote-path <path>',    desc: 'Availabily web path.' },
diff --git a/index.ts b/index.ts
index e7e6a32e0194faf11b4035e741684784b0921f66..15903c38a8696907c22b174f13f33c57a3271d6a 100644
--- a/index.ts
+++ b/index.ts
@@ -500,6 +500,7 @@ function commandLineConf(program:any, conf:any = {}) {
   if (cli.currency)                             conf.currency = cli.currency;
   if (cli.server.port)                          conf.port = cli.server.port;
   if (cli.cpu)                                  conf.cpu = Math.max(0.01, Math.min(1.0, cli.cpu));
+  if (cli.nbCores)                              conf.nbCores = Math.max(1, Math.min(ProverConstants.CORES_MAXIMUM_USE_IN_PARALLEL, cli.nbCores));
   if (cli.prefix)                               conf.prefix = Math.max(ProverConstants.MIN_PEER_ID, Math.min(ProverConstants.MAX_PEER_ID, cli.prefix));
   if (cli.logs.http)                            conf.httplogs = true;
   if (cli.logs.nohttp)                          conf.httplogs = false;