diff --git a/panel/login/index.html b/panel/login/index.html
index 3b74cce..5b86250 100644
--- a/panel/login/index.html
+++ b/panel/login/index.html
@@ -24,7 +24,7 @@
       <form method="POST" action="/login">
         <div class="form-group">
           <label for="username">Username</label>
-          <input type="text" id="username" name="username" placeholder="Username" minlength="3" pattern="[\w0-9][\w0-9_-]" required>
+          <input type="text" id="username" name="username" placeholder="Username" minlength="3" pattern="[\w0-9][\w0-9_-]+" required>
         </div>
 
         <div class="form-group">