diff --git a/code/modules/language/language.dm b/code/modules/language/language.dm
index 4ee15172260..9b4dd8149d4 100644
--- a/code/modules/language/language.dm
+++ b/code/modules/language/language.dm
@@ -222,7 +222,7 @@
 				if(!vocal || vocal.is_broken() || vocal.mute)
 					return FALSE
 
-			if(src.name in H.species.assisted_langs && !(src.name in H.species.intrinsic_languages))
+			if((src.name in H.species.assisted_langs) && !(src.name in H.species.intrinsic_languages))
 				. = FALSE
 				var/obj/item/organ/internal/voicebox/vox = locate() in H.internal_organs	// Only voiceboxes for now. Maybe someday it'll include other organs, but I'm not that clever
 				if(vox)