diff --git a/LoadingBar.java b/LoadingBar.java
index 868872f..7064d15 100644
--- a/LoadingBar.java
+++ b/LoadingBar.java
@@ -363,7 +363,7 @@ public class LoadingBar {
          return MIN_LUNCH_DURATION;
       }
       long totalDuration = startTime.until(endTime, ChronoUnit.MINUTES);
-      int effectiveLunchDuration = ((int) totalDuration) - MAX_NUMBER_WORK_MINS_WITHOUT_LUNCH;
+      long effectiveLunchDuration = totalDuration - MAX_NUMBER_WORK_MINS_WITHOUT_LUNCH;
       return getMinLunchDuration(effectiveLunchDuration);
    }