diff --git a/src/main/java/org/gcube/gcat/api/GCatConstants.java b/src/main/java/org/gcube/gcat/api/GCatConstants.java
index 8f10119..c18839c 100644
--- a/src/main/java/org/gcube/gcat/api/GCatConstants.java
+++ b/src/main/java/org/gcube/gcat/api/GCatConstants.java
@@ -34,7 +34,8 @@ public class GCatConstants {
 	
 	/* Content Moderation fields */
 	public static final String CM_ITEM_STATUS_QUERY_PARAMETER = "status";
-	public static final String SYSTEM_CM_ITEM_STATUS = "system:cm_item_status";
-	public static final String SYSTEM_CM_ITEM_VISIBILITY = "system:cm_item_visibility";
+	public static final String SYSTEM_CM_PREFIX = "system:cm_";
+	public static final String SYSTEM_CM_ITEM_STATUS = SYSTEM_CM_PREFIX + "item_status";
+	public static final String SYSTEM_CM_ITEM_VISIBILITY = SYSTEM_CM_PREFIX + "item_visibility";
 	
 }