diff --git a/src/main/java/org/gcube/accounting/persistence/AccountingPersistenceFactory.java b/src/main/java/org/gcube/accounting/persistence/AccountingPersistenceFactory.java
index 6798def..ce1cad8 100644
--- a/src/main/java/org/gcube/accounting/persistence/AccountingPersistenceFactory.java
+++ b/src/main/java/org/gcube/accounting/persistence/AccountingPersistenceFactory.java
@@ -22,12 +22,16 @@ public class AccountingPersistenceFactory {
 	
 	protected final static Map<String, AccountingPersistence> persistences;
 	
-	static {
-		persistences = new HashMap<String, AccountingPersistence>();
+	public static void initAccountingPackages(){
 		PersistenceBackendFactory.addRecordPackage(ServiceUsageRecord.class.getPackage());
 		PersistenceBackendFactory.addRecordPackage(AggregatedServiceUsageRecord.class.getPackage());
 	}
 	
+	static {
+		persistences = new HashMap<String, AccountingPersistence>();
+		initAccountingPackages();
+	}
+	
 	public static void setFallbackLocation(String path){
 		PersistenceBackendFactory.setFallbackLocation(path);
 	}
diff --git a/src/test/java/org/gcube/testutility/TestUsageRecord.java b/src/test/java/org/gcube/testutility/TestUsageRecord.java
index f495ed3..354a260 100644
--- a/src/test/java/org/gcube/testutility/TestUsageRecord.java
+++ b/src/test/java/org/gcube/testutility/TestUsageRecord.java
@@ -17,6 +17,7 @@ import org.gcube.accounting.datamodel.usagerecords.PortletUsageRecord;
 import org.gcube.accounting.datamodel.usagerecords.ServiceUsageRecord;
 import org.gcube.accounting.datamodel.usagerecords.StorageUsageRecord;
 import org.gcube.accounting.datamodel.usagerecords.TaskUsageRecord;
+import org.gcube.accounting.persistence.AccountingPersistenceFactory;
 import org.gcube.documentstore.exception.InvalidValueException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -59,6 +60,10 @@ public class TestUsageRecord {
 	private final static long MIN_DURATION = 60; // millisec
 	private final static long MAX_DURATION = 1000; // millisec
 	
+	static {
+		AccountingPersistenceFactory.initAccountingPackages();
+	}
+	
 	/**
 	 * Generate A Random long in a range between min and max.
 	 * This function is internally used to set random duration.