diff --git a/code/modules/mob/living/carbon/brain/MMI.dm b/code/modules/mob/living/carbon/brain/MMI.dm
index ffb73ef359f..753d2bd2d6c 100644
--- a/code/modules/mob/living/carbon/brain/MMI.dm
+++ b/code/modules/mob/living/carbon/brain/MMI.dm
@@ -41,7 +41,7 @@
 			user << "<span class='warning'>You aren't sure where this brain came from, but you're pretty sure it's a useless brain!</span>"
 			return
 
-		if(!user.unEquip(src))
+		if(!user.unEquip(O))
 			return
 		var/mob/living/carbon/brain/B = newbrain.brainmob
 		if(!B.key)