diff --git a/packages/sit-onyx/src/components/OnyxDatePicker/OnyxDatePicker.vue b/packages/sit-onyx/src/components/OnyxDatePicker/OnyxDatePicker.vue
index d2af24cb9..65fa7b8ae 100644
--- a/packages/sit-onyx/src/components/OnyxDatePicker/OnyxDatePicker.vue
+++ b/packages/sit-onyx/src/components/OnyxDatePicker/OnyxDatePicker.vue
@@ -57,15 +57,12 @@ const getNormalizedDate = computed(() => {
 
     // for datetime type, the hour must be in the users local timezone so just returning the string returned by `toISOString()` will be invalid
     // since the timezone offset is missing then
-    return `${dateString}T${padStart(date.getHours())}:${padStart(date.getMinutes())}`;
+    const hours = date.getHours().toString().padStart(2, "0");
+    const minutes = date.getMinutes().toString().padStart(2, "0");
+    return `${dateString}T${hours}:${minutes}`;
   };
 });
 
-/**
- * Pad starts the given number with leading zeros if needed to make it 2 digits long.
- */
-const padStart = (value: number) => value.toString().padStart(2, "0");
-
 /**
  * Current value (with getter and setter) that can be used as "v-model" for the native input.
  */