diff --git a/app/javascript/controllers/terminal_controller.js b/app/javascript/controllers/terminal_controller.js
index 2cefd5765..b90be4cc5 100644
--- a/app/javascript/controllers/terminal_controller.js
+++ b/app/javascript/controllers/terminal_controller.js
@@ -27,6 +27,10 @@ export default class extends Controller {
     } else {
       this.#hideHelpMenu()
     }
+
+    if (!this.inputTarget.value.trim()) {
+      event.preventDefault()
+    }
   }
 
   hideMenus() {