diff --git a/lib/core/node_address_validator.dart b/lib/core/node_address_validator.dart
index 676a768ea..0e034dabc 100644
--- a/lib/core/node_address_validator.dart
+++ b/lib/core/node_address_validator.dart
@@ -6,5 +6,5 @@ class NodeAddressValidator extends TextValidator {
       : super(
             errorMessage: S.current.error_text_node_address,
             pattern:
-                '^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\$|^[0-9a-zA-Z.]+\$');
+                '^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\$|^[0-9a-zA-Z.\-]+\$');
 }
diff --git a/lib/core/node_port_validator.dart b/lib/core/node_port_validator.dart
index b7a2f0221..16be00dde 100644
--- a/lib/core/node_port_validator.dart
+++ b/lib/core/node_port_validator.dart
@@ -6,7 +6,7 @@ class NodePortValidator extends TextValidator {
   NodePortValidator()
       : super(
             errorMessage: S.current.error_text_node_port,
-            minLength: 1,
+            minLength: 0,
             maxLength: 5,
             pattern: '^[0-9]');
 }