diff --git a/code/modules/mob/living/carbon/slime/life.dm b/code/modules/mob/living/carbon/slime/life.dm
index 6e3221c19fa..e0afe00ada2 100644
--- a/code/modules/mob/living/carbon/slime/life.dm
+++ b/code/modules/mob/living/carbon/slime/life.dm
@@ -12,6 +12,9 @@
 		if(!ckey)
 			handle_speech_and_mood()
 
+/mob/living/carbon/slime/breathe()
+	return
+
 /mob/living/carbon/slime/proc/AIprocess()  // the master AI process
 
 	if(AIproc || stat == DEAD || client) return