diff --git a/src/hb-uniscribe.cc b/src/hb-uniscribe.cc
index 5c7ff87449c256a8454daac324387ceb0ec175ea..b113ed4cf5253429ba066539c294b1ff9058ba41 100644
--- a/src/hb-uniscribe.cc
+++ b/src/hb-uniscribe.cc
@@ -245,8 +245,9 @@ struct hb_uniscribe_shaper_funcs_t
   }
 };
 
-
+#if HB_USE_ATEXIT
 static void free_static_uniscribe_shaper_funcs ();
+#endif
 
 static struct hb_uniscribe_shaper_funcs_lazy_loader_t : hb_lazy_loader_t<hb_uniscribe_shaper_funcs_t,
 									 hb_uniscribe_shaper_funcs_lazy_loader_t>