diff --git a/front/src/modules/trainschedule/components/ManageTrainSchedule/Allowances/AllowancesActions.tsx b/front/src/modules/trainschedule/components/ManageTrainSchedule/Allowances/AllowancesActions.tsx
index b37b22ea605..a0df202ab5e 100644
--- a/front/src/modules/trainschedule/components/ManageTrainSchedule/Allowances/AllowancesActions.tsx
+++ b/front/src/modules/trainschedule/components/ManageTrainSchedule/Allowances/AllowancesActions.tsx
@@ -314,7 +314,7 @@ export default function AllowancesActions({
             orientation="right"
             sm
             condensed
-            value={allowanceValue}
+            value={allowanceValue !== undefined ? allowanceValue : ''}
             handleType={handleValueAndUnit}
             options={unitsList}
             typeValue="number"
diff --git a/front/src/modules/trainschedule/components/ManageTrainSchedule/Allowances/AllowancesStandardSettings.tsx b/front/src/modules/trainschedule/components/ManageTrainSchedule/Allowances/AllowancesStandardSettings.tsx
index cb9f5b20380..da3ea5d5299 100644
--- a/front/src/modules/trainschedule/components/ManageTrainSchedule/Allowances/AllowancesStandardSettings.tsx
+++ b/front/src/modules/trainschedule/components/ManageTrainSchedule/Allowances/AllowancesStandardSettings.tsx
@@ -76,14 +76,14 @@ export default function AllowancesStandardSettings({
             orientation="right"
             sm
             condensed
-            value={allowanceValue}
+            value={allowanceValue !== undefined ? allowanceValue : ''}
             type={valueAndUnit.value_type}
             handleType={handleType}
             options={unitsList}
             typeValue="number"
             min={1}
             placeholder={t('translation:common.choose')}
-            isInvalid={!!allowanceValue && allowanceValue <= 0}
+            isInvalid={allowanceValue !== undefined && allowanceValue < 1}
             textRight
           />
         </div>