diff --git a/lib/xdg-app-error.c b/lib/xdg-app-error.c
index f40664ab9..76984bcfe 100644
--- a/lib/xdg-app-error.c
+++ b/lib/xdg-app-error.c
@@ -25,4 +25,10 @@
 
 #include <gio/gio.h>
 
+/**
+ * SECTION:xdg-app-error
+ * @Title: Error codes
+ *
+ */
+
 G_DEFINE_QUARK (xdg-app-error-quark, g_io_error)
diff --git a/lib/xdg-app-error.h b/lib/xdg-app-error.h
index b2f371eef..4cbda5b1d 100644
--- a/lib/xdg-app-error.h
+++ b/lib/xdg-app-error.h
@@ -30,6 +30,8 @@ G_BEGIN_DECLS
  * XdgAppError:
  * @XDG_APP_ERROR_ALREADY_INSTALLED: App/runtime is already installed
  * @XDG_APP_ERROR_NOT_INSTALLED: App/runtime is not installed
+ *
+ * Error codes for library functions.
  */
 typedef enum {
   XDG_APP_ERROR_ALREADY_INSTALLED,