diff --git a/code/modules/mob/living/say.dm b/code/modules/mob/living/say.dm
index 606daed0c5..561495bfc8 100644
--- a/code/modules/mob/living/say.dm
+++ b/code/modules/mob/living/say.dm
@@ -331,6 +331,9 @@ GLOBAL_LIST_INIT(department_radio_keys, list(
 /mob/living/proc/can_speak_vocal(message) //Check AFTER handling of xeno and ling channels
 	if(HAS_TRAIT(src, TRAIT_MUTE) && get_message_language(message) != /datum/language/signlanguage)
 		return 0
+		
+	if(get_message_language(message) == /datum/language/signlanguage && src.handcuffed)
+		return 0
 
 	if(is_muzzled())
 		return 0