diff --git a/source/games/sw/src/track.cpp b/source/games/sw/src/track.cpp
index 891dc733c..3fbfcf049 100644
--- a/source/games/sw/src/track.cpp
+++ b/source/games/sw/src/track.cpp
@@ -3140,6 +3140,9 @@ bool ActorTrackDecide(TRACK_POINTp tpoint, DSWActor* actor)
                 if (hit.hitWall == nullptr)
                     return false;
 
+                if (hit.hitWall->nextSector() == nullptr)
+                    return false;
+
                 zdiff = labs(sp->z - hit.hitWall->nextSector()->floorz) >> 8;
 
                 u->jump_speed = PickJumpSpeed(actor, zdiff);