diff --git a/src/hb-buffer.cc b/src/hb-buffer.cc
index b9fe263ce..eecb9d09c 100644
--- a/src/hb-buffer.cc
+++ b/src/hb-buffer.cc
@@ -967,7 +967,7 @@ hb_buffer_set_language (hb_buffer_t   *buffer,
  *
  * 
  *
- * Return value: 
+ * Return value: (transfer none):
  *
  * Since: 1.0
  **/
diff --git a/src/hb-common.cc b/src/hb-common.cc
index c0233f347..ac10cf2dc 100644
--- a/src/hb-common.cc
+++ b/src/hb-common.cc
@@ -286,7 +286,7 @@ retry:
  *
  * 
  *
- * Return value: 
+ * Return value: (transfer none):
  *
  * Since: 1.0
  **/