diff --git a/django/src/ft_auth/templates/authorize.html b/django/src/ft_auth/templates/authorize.html
index ecce9fe6..605df1df 100644
--- a/django/src/ft_auth/templates/authorize.html
+++ b/django/src/ft_auth/templates/authorize.html
@@ -1,7 +1,7 @@
 <form id="ft-username-form" class="hidden ft-form-container" data-url="/api/auth/authorize/">
 	<div id="ft-username-error"></div>
 	<div class="ft-input-wrapper">
-		<input type="text" autocomplete="off" class="ft-username" id="username" placeholder="Enter your username" />
+		<input type="text" autocomplete="off" class="ft-username" id="username" placeholder="Enter your username" minlength="3" maxlength="15"/>
 		<button type="submit" class="ft-button">Register with 42</button>
 	</div>
 </form>
@@ -40,4 +40,4 @@
 			})
 			.catch(error => console.error(error))
 	}
-</script>
\ No newline at end of file
+</script>