diff --git a/src/components/management/EditJobSlot.vue b/src/components/management/EditJobSlot.vue
index 097231c..406382d 100644
--- a/src/components/management/EditJobSlot.vue
+++ b/src/components/management/EditJobSlot.vue
@@ -40,12 +40,12 @@
           :rules="[notEmpty]"
         />
         <q-input
-          v-model="job.required_services"
+          v-model.number="job.required_services"
           filled
           class="col-xs-12 col-sm-6 q-pa-sm"
           label="Dienstanzahl"
           type="number"
-          :rules="[notEmpty]"
+          :rules="[minOneService, notEmpty]"
         />
         <q-input
           v-model="job.comment"
@@ -134,6 +134,10 @@ export default defineComponent({
       validate: () => form.value?.validate() || Promise.resolve(true),
     });
 
+    function minOneService(val: number) {
+      return parseInt(val) > 0 || 'Mindestens ein Dienst nötig';
+    }
+
     return {
       form,
       formatStartEnd,
@@ -141,6 +145,7 @@ export default defineComponent({
       job,
       jobtypes,
       notEmpty,
+      minOneService,
       typeName,
     };
   },