diff --git a/src/components/basis/flight/schedule/FlightScheduleGrid.js b/src/components/basis/flight/schedule/FlightScheduleGrid.js
index 9f6e553f..87badf52 100644
--- a/src/components/basis/flight/schedule/FlightScheduleGrid.js
+++ b/src/components/basis/flight/schedule/FlightScheduleGrid.js
@@ -102,7 +102,10 @@ function FlightScheduleGrid() {
         const minute =
           moment.duration(endDate.diff(startDate)).asMinutes() % 60;
 
-        return `${fillZero(2, String(hours))} : ${fillZero(2, String(minute))}`;
+        return `${fillZero(2, String(hours))} : ${fillZero(
+          2,
+          String(Math.floor(minute))
+        )}`;
       }
     },
     {