diff --git a/code/modules/surgery/organs/tongue.dm b/code/modules/surgery/organs/tongue.dm
index a3edfc2887..7cba3d358a 100644
--- a/code/modules/surgery/organs/tongue.dm
+++ b/code/modules/surgery/organs/tongue.dm
@@ -25,6 +25,7 @@
 		/datum/language/slime,
 		/datum/language/vampiric,
 		/datum/language/dwarf,
+		/datum/language/signlanguage,
 	))
 	healing_factor = STANDARD_ORGAN_HEALING*5 //Fast!!
 	decay_factor = STANDARD_ORGAN_DECAY/2