diff --git a/src/form/ComboGrid.js b/src/form/ComboGrid.js
index 55dee7e..6338a3a 100644
--- a/src/form/ComboGrid.js
+++ b/src/form/ComboGrid.js
@@ -400,7 +400,7 @@ Ext.define('Proxmox.form.ComboGrid', {
 	    matchFieldWidth: false,
 	});
 
-	Ext.applyIf(me, { value: '' }); // hack: avoid ExtJS validate() bug
+	Ext.applyIf(me, { value: [] }); // hack: avoid ExtJS validate() bug
 
 	Ext.applyIf(me.listConfig, { width: 400 });
 
diff --git a/src/form/NetworkSelector.js b/src/form/NetworkSelector.js
index ed3a02b..caa7b7e 100644
--- a/src/form/NetworkSelector.js
+++ b/src/form/NetworkSelector.js
@@ -45,10 +45,6 @@ Ext.define('Proxmox.form.NetworkSelector', {
 	    networkSelectorStore.load();
 	}
     },
-    // set default value to empty array, else it inits it with
-    // null and after the store load it is an empty array,
-    // triggering dirtychange
-    value: [],
     valueField: 'cidr',
     displayField: 'cidr',
     store: {