diff --git a/gtk/gtkstack.c b/gtk/gtkstack.c
index a9a0902c23..b97ebb54bb 100644
--- a/gtk/gtkstack.c
+++ b/gtk/gtkstack.c
@@ -84,7 +84,7 @@
  * # Accessibility
  *
  * GtkStack uses the #GTK_ACCESSIBLE_ROLE_TAB_PANEL for the stack
- * pages.
+ * pages, which are the accessible parent objects of the child widgets.
  */
 
 /**