diff --git a/src/setup.html b/src/setup.html
index a335d6efd..082fd0e8e 100644
--- a/src/setup.html
+++ b/src/setup.html
@@ -71,7 +71,7 @@
                                 <div class="form-group" ng-class="{ 'has-error': (setupForm.username.$dirty && setupForm.username.$invalid) || (!setupForm.username.$dirty && error.username) }">
                                     <label class="control-label">Username</label>
                                     <p ng-show="!setupForm.username.$dirty && error.username">{{ error.username }}</p>
-                                    <input type="text" class="form-control" ng-model="account.username" id="inputUsername" name="username" placeholder="Username" ng-maxlength="512" ng-minlength="3" required autocomplete="off">
+                                    <input type="text" class="form-control" ng-model="account.username" id="inputUsername" name="username" placeholder="Username" ng-maxlength="512" ng-minlength="1" required autocomplete="off">
                                 </div>
                                 <div class="form-group" ng-class="{ 'has-error': setupForm.password.$dirty && setupForm.password.$invalid }">
                                     <label class="control-label">Password</label>