diff --git a/src/rendering/hwrenderer/doom_levelmesh.cpp b/src/rendering/hwrenderer/doom_levelmesh.cpp
index 41727a2ff..17069cf9d 100644
--- a/src/rendering/hwrenderer/doom_levelmesh.cpp
+++ b/src/rendering/hwrenderer/doom_levelmesh.cpp
@@ -104,7 +104,7 @@ DoomLevelMesh::DoomLevelMesh(FLevelLocals &doomMap)
 	{
 		if ((surface.Type == ST_FLOOR || surface.Type == ST_CEILING) && surface.ControlSector)
 		{
-			XFloorToSurface[surface.ControlSector].Push(&surface);
+			XFloorToSurface[surface.Subsector->sector].Push(&surface);
 		}
 	}
 }