diff --git a/code/modules/mob/living/carbon/human/human_movement.dm b/code/modules/mob/living/carbon/human/human_movement.dm
index 5e3d9e59b35..700e55dceca 100644
--- a/code/modules/mob/living/carbon/human/human_movement.dm
+++ b/code/modules/mob/living/carbon/human/human_movement.dm
@@ -189,7 +189,7 @@
 		volume *= 0.5
 	else if(shoes)
 		var/obj/item/clothing/shoes/feet = shoes
-		if(feet)
+		if(istype(feet))
 			volume *= feet.step_volume_mod
 
 	if(!has_organ(BP_L_FOOT) && !has_organ(BP_R_FOOT))