diff --git a/code/modules/mob/living/living.dm b/code/modules/mob/living/living.dm
index 51296df2196..6bc413b72a4 100644
--- a/code/modules/mob/living/living.dm
+++ b/code/modules/mob/living/living.dm
@@ -593,7 +593,7 @@ Sorry Giacom. Please don't be mad :(
 
 /mob/living/movement_delay()
 	. = ..()
-	if(isturf(loc, /turf/open))
+	if(istype(loc, /turf/open))
 		var/turf/open/T = loc
 		. += T.slowdown
 	switch(m_intent)