diff --git a/plugins/org.jkiss.dbeaver.model/src/org/jkiss/dbeaver/model/impl/PropertyDescriptor.java b/plugins/org.jkiss.dbeaver.model/src/org/jkiss/dbeaver/model/impl/PropertyDescriptor.java
index 00c8844646142f47437d259eb1b9c21c04c2ddfe..aa4a4dfece83bab3f476223762133845ca26bfc2 100644
--- a/plugins/org.jkiss.dbeaver.model/src/org/jkiss/dbeaver/model/impl/PropertyDescriptor.java
+++ b/plugins/org.jkiss.dbeaver.model/src/org/jkiss/dbeaver/model/impl/PropertyDescriptor.java
@@ -89,7 +89,7 @@ public class PropertyDescriptor implements DBPPropertyDescriptor, IPropertyValue
     private boolean required;
     private Object defaultValue;
     private Object[] validValues;
-    private boolean allowCustomValues;
+    private boolean allowCustomValues = true;
     private boolean editable;
     private String[] features;