diff --git a/code/modules/mob/living/carbon/brain/MMI.dm b/code/modules/mob/living/carbon/brain/MMI.dm
index 759614f7aea..d26d47b2f04 100644
--- a/code/modules/mob/living/carbon/brain/MMI.dm
+++ b/code/modules/mob/living/carbon/brain/MMI.dm
@@ -147,4 +147,5 @@
 		borg.mmi = null
 	if(brainmob)
 		qdel(brainmob)
+		brainmob = null
 	..()
diff --git a/code/modules/mob/living/carbon/brain/brain_item.dm b/code/modules/mob/living/carbon/brain/brain_item.dm
index 2a55a9ecd95..16521d358db 100644
--- a/code/modules/mob/living/carbon/brain/brain_item.dm
+++ b/code/modules/mob/living/carbon/brain/brain_item.dm
@@ -103,4 +103,5 @@
 /obj/item/device/mmi/Destroy() //copypasted from MMIs.
 	if(brainmob)
 		qdel(brainmob)
+		brainmob = null
 	..()