diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/api/rest/AccessPath.java b/src/main/java/org/gcube/informationsystem/resourceregistry/api/rest/AccessPath.java
index f80b6e0..5c2f458 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/api/rest/AccessPath.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/api/rest/AccessPath.java
@@ -31,8 +31,8 @@ public class AccessPath {
 	public static final String RELATION_TYPE_PATH_PART = "RELATION_TYPE_NAME";
 	public static final String REFERENCE_TYPE_PATH_PART = "REFERENCE_TYPE_NAME";
 	
-	public static final String REFERENCE = "reference";
+	public static final String REFERENCE_PARAM = "reference";
 	public static final String POLYMORPHIC_PARAM = "polymorphic";
-	public static final String DIRECTION = "direction";
+	public static final String DIRECTION_PARAM = "direction";
 	
 }