diff --git a/src/main/java/org/gcube/informationsystem/types/PropertyTypeName.java b/src/main/java/org/gcube/informationsystem/types/PropertyTypeName.java
index 056e566..0bee002 100644
--- a/src/main/java/org/gcube/informationsystem/types/PropertyTypeName.java
+++ b/src/main/java/org/gcube/informationsystem/types/PropertyTypeName.java
@@ -276,7 +276,6 @@ public class PropertyTypeName {
 		}
 		
 		try {
-			genericBaseType = null;
 			genericBaseType = BaseType.getBaseTypeFromString(generic);
 		}catch (IllegalArgumentException e) {
 			genericBaseType = BaseType.PROPERTY;