diff --git a/src/hb-ot-layout-gsubgpos.hh b/src/hb-ot-layout-gsubgpos.hh
index e7d20fd06..3727dd9ea 100644
--- a/src/hb-ot-layout-gsubgpos.hh
+++ b/src/hb-ot-layout-gsubgpos.hh
@@ -2387,7 +2387,7 @@ struct GSUBGPOS
     inline void init (hb_face_t *face)
     {
       this->blob = hb_sanitize_context_t().reference_table<T> (face);
-      table = this->blob->as<T> ();
+      table = this->blob->template as<T> ();
 
       this->lookup_count = table->get_lookup_count ();