diff --git a/src/app/models/trainrunsection.model.ts b/src/app/models/trainrunsection.model.ts
index bdf8d62c..a8ee16f9 100644
--- a/src/app/models/trainrunsection.model.ts
+++ b/src/app/models/trainrunsection.model.ts
@@ -15,6 +15,7 @@ import {
 } from "../data-structures/technical.data.structures";
 import {TrainrunsectionValidator} from "../services/util/trainrunsection.validator";
 import {formatDate} from "@angular/common";
+import {environment} from "src/environments/environment";
 
 export class TrainrunSection {
   private static currentId = 0;
@@ -452,22 +453,27 @@ export class TrainrunSection {
   }
 
   hasTravelTimeWarning(): boolean {
+    if (environment.disableBackend) return false;
     return this.travelTime.warning !== null;
   }
 
   hasSourceDepartureWarning(): boolean {
+    if (environment.disableBackend) return false;
     return this.sourceDeparture.warning !== null;
   }
 
   hasSourceArrivalWarning(): boolean {
+    if (environment.disableBackend) return false;
     return this.sourceArrival.warning !== null;
   }
 
   hasTargetDepartureWarning(): boolean {
+    if (environment.disableBackend) return false;
     return this.targetDeparture.warning !== null;
   }
 
   hasTargetArrivalWarning(): boolean {
+    if (environment.disableBackend) return false;
     return this.targetArrival.warning !== null;
   }