diff --git a/gtk/gtkbuilder.c b/gtk/gtkbuilder.c
index b0775d2907..069106b3f5 100644
--- a/gtk/gtkbuilder.c
+++ b/gtk/gtkbuilder.c
@@ -203,6 +203,7 @@
  *
  * Additionally, since 3.10 a special <template> tag has been added
  * to the format allowing one to define a widget class’s components.
+ * See the [GtkWidget documentation][composite-templates] for details.
  */
 
 #include "config.h"
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 1545441d8e..e1db3577fd 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -319,7 +319,7 @@
  * </object>
  * ]|
  *
- * # Building composite widgets from template XML
+ * # Building composite widgets from template XML ## {#composite-templates}
  *
  * GtkWidget exposes some facilities to automate the proceedure
  * of creating composite widgets using #GtkBuilder interface description