diff --git a/config/alfresco/messages/system-model.properties b/config/alfresco/messages/system-model.properties
index 61e6ae32da..9ac35c959b 100644
--- a/config/alfresco/messages/system-model.properties
+++ b/config/alfresco/messages/system-model.properties
@@ -32,6 +32,8 @@ sys_systemmodel.property.sys_store-identifier.title=Store Identifier
 sys_systemmodel.property.sys_store-identifier.description=Store Identifier
 sys_systemmodel.property.sys_node-uuid.title=Node Identifier
 sys_systemmodel.property.sys_node-uuid.description=Node Identifier
+sys_systemmodel.property.sys_node-dbid.title=Node DB Identifier
+sys_systemmodel.property.sys_node-dbid.description=Node DB Identifier
 
 sys_systemmodel.aspect.sys_archived.title=Archived
 sys_systemmodel.aspect.sys_archived.description=Archived Node
diff --git a/source/java/org/alfresco/repo/forms/processor/node/NodeFormProcessor.java b/source/java/org/alfresco/repo/forms/processor/node/NodeFormProcessor.java
index 3077fab9c4..027b54ec6d 100644
--- a/source/java/org/alfresco/repo/forms/processor/node/NodeFormProcessor.java
+++ b/source/java/org/alfresco/repo/forms/processor/node/NodeFormProcessor.java
@@ -595,6 +595,13 @@ public class NodeFormProcessor extends FilteredFormProcessor
         fieldDef.setProtectedField(propDef.isProtected());
         fieldDef.setRepeating(propDef.isMultiValued());
         
+        // any property from the system model (sys prefix) should be protected
+        // the model doesn't currently enforce this so make sure they are not editable
+        if (NamespaceService.SYSTEM_MODEL_1_0_URI.equals(propDef.getName().getNamespaceURI()))
+        {
+            fieldDef.setProtectedField(true);
+        }
+        
         // define the data key name and set
         String dataKeyName = PROP_DATA_PREFIX + nameParts[0] + DATA_KEY_SEPARATOR + nameParts[1];
         fieldDef.setDataKeyName(dataKeyName);