diff --git a/src/main/java/info/bukova/isspst/services/requirement/TripRequirementServiceImpl.java b/src/main/java/info/bukova/isspst/services/requirement/TripRequirementServiceImpl.java
index 52f7e8da..28766233 100644
--- a/src/main/java/info/bukova/isspst/services/requirement/TripRequirementServiceImpl.java
+++ b/src/main/java/info/bukova/isspst/services/requirement/TripRequirementServiceImpl.java
@@ -57,8 +57,6 @@ public class TripRequirementServiceImpl extends RequirementBaseServiceImpl<TripR
 	@Transactional
 	@PreAuthorize("hasPermission(this, 'PERM_EDIT') or hasPermission(#entity, this.getUpdateEntityPermission())")
 	public void update(TripRequirement entity) {
-		super.update(entity);
-
 		if (entity.getState() == RequirementState.APPROVED) {
 			for (TripBill bill : getBills(entity)) {
 				TripBill newBill = tripBillService.createTripBill(entity);
@@ -75,6 +73,8 @@ public class TripRequirementServiceImpl extends RequirementBaseServiceImpl<TripR
 				tripBillService.update(bill);
 			}
 		}
+
+		super.update(entity);
 	}
 
 	@Override
@@ -141,25 +141,53 @@ public class TripRequirementServiceImpl extends RequirementBaseServiceImpl<TripR
 
 	@Override
 	protected void postApprove(TripRequirement entity) {
-		if (entity.getState() == RequirementState.APPROVED) {
+		if (entity.getState() != RequirementState.APPROVED) {
+			return;
+		}
+
+		List<TripBill> billList = getBills(entity);
+		boolean hasOwned = false;
+
+		for (TripBill tb : billList) {
+			if (tb.getOwnedBy().equals(entity.getOwnedBy())) {
+				hasOwned = true;
+				break;
+			}
+		}
+
+		if (!hasOwned) {
 			TripBill bill = tripBillService.createTripBill(entity);
 			tripBillService.add(bill);
 			bill.setOwnedBy(entity.getOwnedBy());
 			tripBillService.update(bill);
+		}
 
-			if (entity.getBillForPassengers() != null && entity.getBillForPassengers()) {
-				for (User u : entity.getPassengers()) {
-					if (!u.equals(entity.getOwnedBy())) {
-						TripBill passBill = tripBillService.createPassengersBill(entity);
-						tripBillService.add(passBill);
-						passBill.setOwnedBy(u);
-						tripBillService.update(passBill);
-					}
+		if (entity.getBillForPassengers() != null && entity.getBillForPassengers()) {
+			for (User u : entity.getPassengers()) {
+				if (canCreateBill(entity, u, billList)) {
+					TripBill passBill = tripBillService.createPassengersBill(entity);
+					tripBillService.add(passBill);
+					passBill.setOwnedBy(u);
+					tripBillService.update(passBill);
 				}
+			}
 
-				sendMailToPassengers(entity, settingsService.getSettings().getConfReqTripPassenger());
+			sendMailToPassengers(entity, settingsService.getSettings().getConfReqTripPassenger());
+		}
+	}
+
+	private boolean canCreateBill(TripRequirement req, User owner, List<TripBill> bills) {
+		if (owner.equals(req.getOwnedBy())) {
+			return false;
+		}
+
+		for (TripBill tb : bills) {
+			if (tb.getOwnedBy().equals(owner)) {
+				return false;
 			}
 		}
+
+		return true;
 	}
 
 	@Override