diff --git a/migrator/derived_chargers.go b/migrator/derived_chargers.go
index 7fd477b1c..d9a1ce386 100644
--- a/migrator/derived_chargers.go
+++ b/migrator/derived_chargers.go
@@ -164,8 +164,8 @@ func (m *Migrator) derivedChargers2Chargers(dck *v1DerivedChargersWithKey) (err
 	}
 
 	for i, dc := range dck.Value.Chargers {
-		attr := derivedChargers2AttributeProfile(dc, skey[1], fmt.Sprintf("%s%v", dck.Key, i), filter)
-		ch := derivedChargers2Charger(dc, skey[1], fmt.Sprintf("%s%v", dck.Key, i), filter)
+		attr := derivedChargers2AttributeProfile(dc, skey[1], fmt.Sprintf("%s_%v", dck.Key, i), filter)
+		ch := derivedChargers2Charger(dc, skey[1], fmt.Sprintf("%s_%v", dck.Key, i), filter)
 		if len(attr.Attributes) != 0 {
 			if err = m.dmOut.DataManager().DataDB().SetAttributeProfileDrv(attr); err != nil {
 				return err
diff --git a/migrator/derived_chargers_it_test.go b/migrator/derived_chargers_it_test.go
index a840881ad..4a7aa0ff7 100644
--- a/migrator/derived_chargers_it_test.go
+++ b/migrator/derived_chargers_it_test.go
@@ -159,7 +159,7 @@ func testDCITMigrateAndMove(t *testing.T) {
 	}
 	attrProf := &engine.AttributeProfile{
 		Tenant:   "cgrates.org",
-		ID:       fmt.Sprintf("%s%v", derivch.Key, 0),
+		ID:       fmt.Sprintf("%s_%v", derivch.Key, 0),
 		Contexts: []string{utils.META_ANY},
 		FilterIDs: []string{
 			"*destination:Destination:1001;1002;1003",
@@ -186,7 +186,7 @@ func testDCITMigrateAndMove(t *testing.T) {
 	attrProf.Compile()
 	charger := &engine.ChargerProfile{
 		Tenant: defaultTenant,
-		ID:     fmt.Sprintf("%s%v", derivch.Key, 0),
+		ID:     fmt.Sprintf("%s_%v", derivch.Key, 0),
 		FilterIDs: []string{
 			"*destination:Destination:1001;1002;1003",
 			"*string:Account:1003",