diff --git a/docs/reference/glib/glib-sections.txt b/docs/reference/glib/glib-sections.txt
index 546454241..8d54f6bde 100644
--- a/docs/reference/glib/glib-sections.txt
+++ b/docs/reference/glib/glib-sections.txt
@@ -579,7 +579,6 @@ GSourcePrivate
 G_THREADS_ENABLED
 G_THREADS_IMPL_POSIX
 G_THREADS_IMPL_WIN32
-G_THREADS_IMPL_NONE
 
 <SUBSECTION>
 G_THREAD_ERROR
diff --git a/glib/gthread.c b/glib/gthread.c
index e30b3966c..e049f725c 100644
--- a/glib/gthread.c
+++ b/glib/gthread.c
@@ -143,14 +143,6 @@
  * always defined.
  **/
 
-/**
- * G_THREADS_IMPL_NONE:
- *
- * This macro is defined if no thread implementation is used. You can,
- * however, provide one to g_thread_init() to make GLib multi-thread
- * safe.
- **/
-
 /* G_LOCK Documentation {{{1 ---------------------------------------------- */
 
 /* IMPLEMENTATION NOTE: