diff --git a/mp_core.h b/mp_core.h
index c56cbf0c40..8e4eb663d5 100644
--- a/mp_core.h
+++ b/mp_core.h
@@ -112,7 +112,6 @@ extern float playback_speed;
 extern int osd_duration;
 extern int term_osd;
 extern int fixed_vo;
-extern int ass_enabled;
 extern int forced_subs_only;