diff --git a/changelog.md b/changelog.md
index 4f7339d8..9da044bd 100644
--- a/changelog.md
+++ b/changelog.md
@@ -229,6 +229,7 @@ BAI/ANTISHIP/DEAD/STRIKE/BARCAP/CAS/OCA/AIR-ASSAULT (main) missions
 * **[Plugins]** Fixed Lua errors in Skynet plugin that would occur whenever one coalition had no IADS nodes.
 * **[UI]** Fixed deleting waypoints in custom flight plans deleting the wrong waypoint.
 * **[UI]** Fixed flight properties UI to support F-15E S4+ laser codes.
+* **[UI]** Fixed UI bug where altering an "ahead of package" TOT offset would change the offset back to a "behind pacakge" offset.
 
 # 8.1.0
 
diff --git a/qt_ui/windows/mission/flight/settings/FlightPlanPropertiesGroup.py b/qt_ui/windows/mission/flight/settings/FlightPlanPropertiesGroup.py
index 9e1c8b2d..06cbd90c 100644
--- a/qt_ui/windows/mission/flight/settings/FlightPlanPropertiesGroup.py
+++ b/qt_ui/windows/mission/flight/settings/FlightPlanPropertiesGroup.py
@@ -122,11 +122,12 @@ class FlightPlanPropertiesGroup(QGroupBox):
             )
 
     def set_tot_offset(self, offset: QTime) -> None:
-        self.flight.flight_plan.tot_offset = timedelta(
+        offset = timedelta(
             hours=offset.hour(), minutes=offset.minute(), seconds=offset.second()
         )
         if self.negative_offset_checkbox.isChecked():
-            return self.toggle_negative_offset()
+            offset = -offset
+        self.flight.flight_plan.tot_offset = offset
         self.update_departure_time()
 
     def toggle_negative_offset(self) -> None: