diff --git a/code/modules/mob/transform_procs.dm b/code/modules/mob/transform_procs.dm
index 5ce5ed8e04..fcd670543c 100644
--- a/code/modules/mob/transform_procs.dm
+++ b/code/modules/mob/transform_procs.dm
@@ -532,7 +532,7 @@
 /mob/living/carbon/human/Animalize(mind_transfer = TRUE)
 
 	var/list/mobtypes = typesof(/mob/living/simple_animal)
-	var/mobpath = input("Which type of mob should [src] turn into?", "Choose a type") in mobtypes|null
+	var/mobpath = input("Which type of mob should [src] turn into?", "Choose a type") as null|anything in mobtypes
 	if(!mobpath)
 		return
 	if(mind)
@@ -567,7 +567,7 @@
 /mob/proc/Animalize(mind_transfer = TRUE)
 
 	var/list/mobtypes = typesof(/mob/living/simple_animal)
-	var/mobpath = input("Which type of mob should [src] turn into?", "Choose a type") in mobtypes|null
+	var/mobpath = input("Which type of mob should [src] turn into?", "Choose a type") as null|anything in mobtypes
 	if(!mobpath)
 		return
 	if(mind)