diff --git a/code/ATMOSPHERICS/pipes.dm b/code/ATMOSPHERICS/pipes.dm
index 7332b57e7de..894798e25c9 100644
--- a/code/ATMOSPHERICS/pipes.dm
+++ b/code/ATMOSPHERICS/pipes.dm
@@ -426,7 +426,7 @@
 		universal_underlays(node2)
 	else
 		universal_underlays(,dir)
-		universal_underlays(dir, -180)
+		universal_underlays(,turn(dir, -180))
 
 /obj/machinery/atmospherics/pipe/simple/visible/universal/update_underlays()
 	..()