diff --git a/code/modules/multiz/turf.dm b/code/modules/multiz/turf.dm
index 6e91657e5e5..14c376e8969 100644
--- a/code/modules/multiz/turf.dm
+++ b/code/modules/multiz/turf.dm
@@ -92,6 +92,9 @@
 		addtimer(CALLBACK(above, /turf/simulated/open/.proc/update), 0)
 		above = null
 
+	if (below)
+		below.above = null
+
 	below = null
 
 	LAZYCLEARLIST(climbers)