diff --git a/lib/command.js b/lib/command.js
index 7a637cb77..e06510443 100644
--- a/lib/command.js
+++ b/lib/command.js
@@ -330,7 +330,7 @@ class Command extends EventEmitter {
    */
 
   arguments(names) {
-    names.split(/ +/).forEach((detail) => {
+    names.trim().split(/ +/).forEach((detail) => {
       this.argument(detail);
     });
     return this;