diff --git a/engine/eventcost.go b/engine/eventcost.go
index c334cd04d..7e3cd88d8 100644
--- a/engine/eventcost.go
+++ b/engine/eventcost.go
@@ -394,8 +394,9 @@ func (ec *EventCost) AsCallCost(tor string) *CallCost {
 
 		incrs := cIl.Increments
 		if l := len(cIl.Increments); l != 0 {
-			if ec.Accounting[cIl.Increments[l-1].AccountingID].RatingID == utils.MetaRounding {
-				// special case: if the last increment is has the ratingID equal to *roundig
+			if cIl.Increments[l-1].Cost != 0 &&
+				ec.Accounting[cIl.Increments[l-1].AccountingID].RatingID == utils.MetaRounding {
+				// special case: if the last increment has the ratingID equal to *roundig
 				// we consider it as the roundIncrement
 				l--
 				incrs = incrs[:l]
diff --git a/engine/eventcost_test.go b/engine/eventcost_test.go
index 3760edcfc..cc243146a 100644
--- a/engine/eventcost_test.go
+++ b/engine/eventcost_test.go
@@ -1259,6 +1259,59 @@ func TestECAsCallCost(t *testing.T) {
 	}
 }
 
+func TestECAsCallCost2(t *testing.T) {
+	eCC := &CallCost{
+		ToR:        utils.VOICE,
+		Cost:       0,
+		RatedUsage: 60000000000,
+		Timespans: TimeSpans{
+			&TimeSpan{
+				TimeStart: time.Date(2017, 1, 9, 16, 18, 21, 0, time.UTC),
+				TimeEnd:   time.Date(2017, 1, 9, 16, 19, 21, 0, time.UTC),
+				Cost:      0,
+				RateInterval: &RateInterval{ // standard rating
+					Timing: &RITiming{
+						StartTime: "00:00:00",
+					},
+					Rating: &RIRate{
+						ConnectFee:       0.1,
+						RoundingMethod:   "*up",
+						RoundingDecimals: 5,
+						Rates: RateGroups{
+							&Rate{
+								GroupIntervalStart: time.Duration(0),
+								Value:              0.01,
+								RateUnit:           time.Duration(1 * time.Second),
+								RateIncrement:      time.Duration(1 * time.Minute),
+							},
+						},
+					},
+				},
+				DurationIndex:  time.Minute,
+				MatchedSubject: "*out:cgrates.org:call:*any",
+				MatchedPrefix:  "+49",
+				MatchedDestId:  "GERMANY",
+				RatingPlanId:   "RPL_RETAIL1",
+				CompressFactor: 1,
+				Increments: Increments{
+					&Increment{ // ConnectFee
+						Cost:           0,
+						Duration:       time.Minute,
+						BalanceInfo:    &DebitInfo{},
+						CompressFactor: 1,
+					},
+				},
+			},
+		},
+	}
+	ec := NewEventCostFromCallCost(eCC, "cgrID", utils.MetaDefault)
+
+	cc := ec.AsCallCost(utils.EmptyString)
+	if !reflect.DeepEqual(eCC, cc) {
+		t.Errorf("Expecting: %+v, received: %+v", utils.ToJSON(eCC), utils.ToJSON(cc))
+	}
+}
+
 func TestECTrimZeroAndFull(t *testing.T) {
 	ec := testEC.Clone()
 	if srplsEC, err := ec.Trim(time.Duration(10 * time.Minute)); err != nil {
diff --git a/packages/debian/changelog b/packages/debian/changelog
index 4546a1550..1160ab8a3 100644
--- a/packages/debian/changelog
+++ b/packages/debian/changelog
@@ -6,6 +6,7 @@ cgrates (0.10.3~dev) UNRELEASED; urgency=medium
     AccountIDs and RatingPlanIDs to calculate
   * [SessionS] Compile the SRun.EventCost before store it and send it further
   * [ApierS] Correct handle error in case of APIerSv1.GetActionTriggers
+  * [SessionS] Added extra condition to determine if the increment is considered the roundIncrement
 
  -- DanB <danb@cgrates.org>  Thu, 08 Oct 2020 16:23:58 +0300
 
diff --git a/sessions/sessions.go b/sessions/sessions.go
index 4e8c836a0..44acf47cb 100644
--- a/sessions/sessions.go
+++ b/sessions/sessions.go
@@ -558,7 +558,6 @@ func (sS *SessionS) refundSession(s *Session, sRunIdx int, rUsage time.Duration)
 	} else if srplsEC == nil {
 		return
 	}
-	utils.Logger.Debug(fmt.Sprintf("Preparing for session refund, EC: %s", utils.ToJSON(srplsEC)))
 	sCC := srplsEC.AsCallCost(sr.CD.ToR)
 	var incrmts engine.Increments
 	for _, tmspn := range sCC.Timespans {