diff --git a/src/main/java/org/gcube/accounting/datamodel/validators/ValidIntegerValidator.java b/src/main/java/org/gcube/accounting/datamodel/validators/ValidIntegerValidator.java
index 2aa0309..dd6c40c 100644
--- a/src/main/java/org/gcube/accounting/datamodel/validators/ValidIntegerValidator.java
+++ b/src/main/java/org/gcube/accounting/datamodel/validators/ValidIntegerValidator.java
@@ -1,6 +1,5 @@
 package org.gcube.accounting.datamodel.validators;
 
-import org.gcube.accounting.datamodel.UsageRecord;
 import org.gcube.common.validator.annotations.FieldValidator;
 
 public class ValidIntegerValidator implements FieldValidator<ValidLong>{