diff --git a/code/game/atoms_movable.dm b/code/game/atoms_movable.dm
index 79326ab9e2ad..7a1f7a36283a 100644
--- a/code/game/atoms_movable.dm
+++ b/code/game/atoms_movable.dm
@@ -540,7 +540,7 @@
 
 	var/previous_virtual_z = OldLoc?.virtual_z() || 0
 	var/current_virtual_z = virtual_z()
-	if(current_virtual_z && current_virtual_z != previous_virtual_z)
+	if(current_virtual_z != previous_virtual_z)
 		on_virtual_z_change(current_virtual_z, previous_virtual_z)
 
 	SEND_SIGNAL(src, COMSIG_MOVABLE_MOVED, OldLoc, Dir, Forced, old_locs)