diff --git a/code/modules/arousal/organs/butt.dm b/code/modules/arousal/organs/butt.dm
index bcad9af8fb..9496cf1389 100644
--- a/code/modules/arousal/organs/butt.dm
+++ b/code/modules/arousal/organs/butt.dm
@@ -16,7 +16,7 @@
 	var/prev_size //former size value, to allow update_size() to early return should be there no significant changes.
 	layer_index = BUTT_LAYER_INDEX
 
-/obj/item/organ/genital/butt/modify_size(modifier, min = -INFINITY, max = INFINITY)
+/obj/item/organ/genital/butt/modify_size(modifier, min = -INFINITY, max = BUTT_SIZE_MAX)
 	var/new_value = clamp(size_cached + modifier, max(min, min_size ? min_size : -INFINITY), min(max_size ? max_size : INFINITY, max))
 	if(new_value == size_cached)
 		return
diff --git a/modular_splurt/code/modules/arousal/organs/belly.dm b/modular_splurt/code/modules/arousal/organs/belly.dm
index 8f17da4a32..86b7be1956 100644
--- a/modular_splurt/code/modules/arousal/organs/belly.dm
+++ b/modular_splurt/code/modules/arousal/organs/belly.dm
@@ -25,7 +25,7 @@
 	if(!owner)
 		return
 
-/obj/item/organ/genital/belly/modify_size(modifier, min = -INFINITY, max = INFINITY)
+/obj/item/organ/genital/belly/modify_size(modifier, min = -INFINITY, max = BELLY_SIZE_MAX)
 	var/new_value = clamp(size_cached + modifier, max(min, min_size ? min_size : -INFINITY), min(max_size ? max_size : INFINITY, max))
 	if(new_value == size_cached)
 		return