diff --git a/common/ipv4addressdelegate.h b/common/ipv4addressdelegate.h
index 9e80d17c..c6a87f86 100644
--- a/common/ipv4addressdelegate.h
+++ b/common/ipv4addressdelegate.h
@@ -50,7 +50,7 @@ inline QWidget* IPv4AddressDelegate::createEditor(QWidget *parent,
     ipEdit = static_cast<QLineEdit*>(QItemDelegate::createEditor(
                 parent, option, index));
 
-    ipEdit->setInputMask("009.009.009.009;"); // FIXME: use validator
+    ipEdit->setInputMask("000.000.000.000;"); // FIXME: use validator
 
     return ipEdit;
 }