diff --git a/views/domain/domain_add.ms b/views/domain/domain_add.ms
index 2e2c1047..4c8daa82 100644
--- a/views/domain/domain_add.ms
+++ b/views/domain/domain_add.ms
@@ -46,7 +46,7 @@
             <label for="ddomain" class="col-sm-3 control-label">{{t 'domain_name'}}</label>
             <div class="clearfix visible-xs"></div>
             <div class="col-sm-4 col-xs-6">
-                <input type="text" id="ddomain" name="ddomain" class="form-control" placeholder="{{t 'myserver'}}" pattern="^[a-z0-9-]$">
+                <input type="text" id="ddomain" name="ddomain" class="form-control" placeholder="{{t 'myserver'}}" pattern="^[a-z0-9-]+$">
             </div>
             <div class="col-sm-5 col-xs-6">
                <select class="form-control" name="ddomain-ext">
diff --git a/views/postinstall/postinstall_2.ms b/views/postinstall/postinstall_2.ms
index 39362948..ae25e7fb 100644
--- a/views/postinstall/postinstall_2.ms
+++ b/views/postinstall/postinstall_2.ms
@@ -50,7 +50,7 @@
                 <label for="ddomain" class="input-group-addon">
                   <span class="fa-fw fa-cloud"></span><span class="sr-only">{{t 'domain'}}</span>
                 </label>
-                <input type="text" id="ddomain" name="ddomain" class="form-control" placeholder="{{t 'myserver'}}" pattern="^[a-z0-9-]$">
+                <input type="text" id="ddomain" name="ddomain" class="form-control" placeholder="{{t 'myserver'}}" pattern="^[a-z0-9-]+$">
               </div>
             </div>
             <div class="col-sm-5 col-xs-6">