diff --git a/code/__DEFINES/is_helpers.dm b/code/__DEFINES/is_helpers.dm
index c59bbb25a7d..addeca87398 100644
--- a/code/__DEFINES/is_helpers.dm
+++ b/code/__DEFINES/is_helpers.dm
@@ -5,7 +5,7 @@
 #define islist(L) (istype(L, /list))
 
 #if DM_VERSION >= 512
-#define in_range(source, user) (get_dist(source, user) <= 1 && (get_turf(source)?:z) == (get_turf(source)?:z))
+#define in_range(source, user) (get_dist(source, user) <= 1 && (get_step(source, 0)?:z) == (get_step(user, 0)?:z))
 #if DM_VERSION > 512
 #warn Remove this check.
 #endif
@@ -197,4 +197,4 @@ GLOBAL_LIST_INIT(glass_sheet_types, typecacheof(list(
 
 #define is_glass_sheet(O) (is_type_in_typecache(O, GLOB.glass_sheet_types))
 
-#define isblobmonster(O) (istype(O, /mob/living/simple_animal/hostile/blob))
+#define isblobmonster(O) (istype(O, /mob/living/simple_animal/hostile/blob))
\ No newline at end of file