diff --git a/src/hb-unicode.c b/src/hb-unicode.c
index fce79e63a..7970a79c3 100644
--- a/src/hb-unicode.c
+++ b/src/hb-unicode.c
@@ -291,7 +291,7 @@ const hb_direction_t horiz_dir[] =
 #undef LTR
 #undef RTL
 
-HB_INTERNAL hb_direction_t
+hb_direction_t
 _hb_script_get_horizontal_direction (hb_script_t script)
 {
   if (unlikely ((unsigned int) script >= ARRAY_LENGTH (horiz_dir)))