diff --git a/CHANGELOG.md b/CHANGELOG.md
index a8cfaf0..c2bcf0c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 ## [Unreleased]
+- Fix bug that didn't show seats for some study halls
 
 ## [0.1.13]
 - Fix bug that didn't allow to book a seat
diff --git a/lib/features/booking/models/booking.dart b/lib/features/booking/models/booking.dart
index 64b14d9..80a6b14 100644
--- a/lib/features/booking/models/booking.dart
+++ b/lib/features/booking/models/booking.dart
@@ -122,7 +122,7 @@ class BookingsPerSeats {
 
   List<TimeRange> get slots => List.unmodifiable(
         Iterable.generate(
-          (timeRange.timeEnd.hour - timeRange.timeStart.hour) * 2 +
+          (timeRange.normalizedTimeEnd.hour - timeRange.timeStart.hour) * 2 +
               (timeRange.timeEnd.minute - timeRange.timeStart.minute + 1) ~/ 30,
           (index) => TimeRange(
             timeStart: timeRange.timeStart,