diff --git a/js/vehicleApi.js b/js/vehicleApi.js
index c7a4b8b..975987a 100644
--- a/js/vehicleApi.js
+++ b/js/vehicleApi.js
@@ -250,7 +250,13 @@ exports.apiRefuelingById=asyncHandler(async (req,res)=>{
       res.redirect('/');
       return;  
     }
-    var oilChangeLast= getTopN(vehicle.oilChangeLast,'kilometer',1)[0].kilometer;
+    var oilChangeLast=0;
+    var topN=getTopN(vehicle.oilChangeLast,'kilometer',1)[0]
+    if (topN!=null)
+    {
+      oilChangeLast= getTopN(vehicle.oilChangeLast,'kilometer',1)[0].kilometer;
+    }
+
     const settings=await Settings.find({name:"vehicleEmailNotify"});
     var nextOilChange=oilChangeLast+vehicle.oilChangeInterval
     var remainingKilometers=nextOilChange-parseInt(parseInt(kmcounter));