diff --git a/src/modules/kpi/kpi.service.ts b/src/modules/kpi/kpi.service.ts
index 0a68748..39c9993 100644
--- a/src/modules/kpi/kpi.service.ts
+++ b/src/modules/kpi/kpi.service.ts
@@ -57,9 +57,11 @@ export class KpiService extends DB {
       const orderDate = new Date(item.orders.date);
 
       item.orders.food_ordered.map((food) => {
-        const preparationTime = new Date(food.timeReady);
-        const timeDiff = orderDate.getTime() - preparationTime.getTime();
-        preparationTimes.push(timeDiff / (1000 * 60));
+        if (food.timeReady) {
+          const preparationTime = new Date(food.timeReady);
+          const timeDiff = orderDate.getTime() - preparationTime.getTime();
+          preparationTimes.push(timeDiff / (1000 * 60));
+        }
       });
     });
 
@@ -142,9 +144,11 @@ export class KpiService extends DB {
         const orderDate = new Date(item.orders.date);
 
         item.orders.food_ordered.map((food) => {
-          const preparationTime = new Date(food.timeReady);
-          const timeDiff = orderDate.getTime() - preparationTime.getTime();
-          preparationTimes.push(timeDiff / (1000 * 60));
+          if (food.timeReady) {
+            const preparationTime = new Date(food.timeReady);
+            const timeDiff = orderDate.getTime() - preparationTime.getTime();
+            preparationTimes.push(timeDiff / (1000 * 60));
+          }
         });
       });