diff --git a/glib/gutils.c b/glib/gutils.c
index 5f98e6e3d..70b08b6e1 100644
--- a/glib/gutils.c
+++ b/glib/gutils.c
@@ -1003,9 +1003,11 @@ static gchar *g_prgname = NULL;
  * Gets the name of the program. This name should not be localized,
  * in contrast to g_get_application_name().
  *
- * If you are using GDK or GTK+ the program name is set in gdk_init(), 
- * which is called by gtk_init(). The program name is found by taking 
- * the last component of @argv[0].
+ * If you are using #GApplication the program name is set in
+ * g_application_run(). In case of GDK or GTK+ it is set in
+ * gdk_init(), which is called by gtk_init() and the
+ * #GtkApplication::startup handler. The program name is found by
+ * taking the last component of @argv[0].
  *
  * Returns: the name of the program. The returned string belongs 
  *     to GLib and must not be modified or freed.
@@ -1052,6 +1054,12 @@ g_get_prgname (void)
  * Sets the name of the program. This name should not be localized,
  * in contrast to g_set_application_name().
  *
+ * If you are using #GApplication the program name is set in
+ * g_application_run(). In case of GDK or GTK+ it is set in
+ * gdk_init(), which is called by gtk_init() and the
+ * #GtkApplication::startup handler. The program name is found by
+ * taking the last component of @argv[0].
+ *
  * Note that for thread-safety reasons this function can only be called once.
  */
 void