diff --git a/docs/tr1/CHANGELOG.md b/docs/tr1/CHANGELOG.md
index 31a10b5a1..e885f60fe 100644
--- a/docs/tr1/CHANGELOG.md
+++ b/docs/tr1/CHANGELOG.md
@@ -40,6 +40,7 @@
 - fixed Lara at times ending up in incorrect rooms when using the teleport cheat (#2486, regression from 3.0)
 - fixed the `/pos` console command reporting the base room number when Lara is actually in a flipped room (#2487, regression from 3.0)
 - fixed clicks in audio sounds (#2846, regression from 2.0)
+- fixed Lara being killed if she enters the void in a level that uses the `disable_floor` sequence in the game flow (#2874, regression from 4.9)
 - improved bubble appearance (#2672)
 - improved rendering performance
 - improved pause exit dialog - it can now be canceled with escape
diff --git a/docs/tr2/CHANGELOG.md b/docs/tr2/CHANGELOG.md
index 8a5084b21..56eae237f 100644
--- a/docs/tr2/CHANGELOG.md
+++ b/docs/tr2/CHANGELOG.md
@@ -2,6 +2,7 @@
 - added aliases to CLI options (`-gold` becomes `-g/--gold`)
 - added a `--help` CLI option (may not output anything on Windows machines – OS bug)
 - changed the sound dialog appearance (repositioned, added text labels and arrows)
+- fixed Lara being killed if she enters the void in a level that uses the `disable_floor` sequence in the game flow (#2874, regression from 0.10)
 
 ## [1.0.2](https://github.com/LostArtefacts/TRX/compare/tr2-1.0.1...tr2-1.0.2) - 2025-04-26
 - changed The Golden Mask strings to default to the OG strings file for the main tables (#2847)
diff --git a/src/libtrx/game/rooms/common.c b/src/libtrx/game/rooms/common.c
index b10c7ceb7..0dc525142 100644
--- a/src/libtrx/game/rooms/common.c
+++ b/src/libtrx/game/rooms/common.c
@@ -550,7 +550,7 @@ void Room_SetAbyssHeight(const int16_t height)
     CLAMPG(m_AbyssMaxHeight, MAX_HEIGHT - STEP_L);
 }
 
-bool Room_IsAbyssHeight(const int16_t height)
+bool Room_IsAbyssHeight(const int32_t height)
 {
     return m_AbyssMinHeight != 0 && height >= m_AbyssMinHeight;
 }
diff --git a/src/libtrx/include/libtrx/game/rooms/common.h b/src/libtrx/include/libtrx/game/rooms/common.h
index 1d24b62b7..19539f1ce 100644
--- a/src/libtrx/include/libtrx/game/rooms/common.h
+++ b/src/libtrx/include/libtrx/game/rooms/common.h
@@ -43,7 +43,7 @@ SECTOR *Room_GetPitSector(const SECTOR *sector, int32_t x, int32_t z);
 SECTOR *Room_GetSkySector(const SECTOR *sector, int32_t x, int32_t z);
 
 void Room_SetAbyssHeight(int16_t height);
-bool Room_IsAbyssHeight(int16_t height);
+bool Room_IsAbyssHeight(int32_t height);
 HEIGHT_TYPE Room_GetHeightType(void);
 int16_t Room_GetHeight(const SECTOR *sector, int32_t x, int32_t y, int32_t z);
 int16_t Room_GetHeightEx(