diff --git a/man7/futex.7 b/man7/futex.7
index eac0a6fa1..75f1834db 100644
--- a/man7/futex.7
+++ b/man7/futex.7
@@ -29,7 +29,8 @@ but restricts itself to issues relevant for
 application and library development.
 Most programmers will in fact not be using futexes directly but will
 instead rely on system libraries built on them,
-such as the NPTL pthreads implementation.
+such as the Native POSIX Thread Library (NPTL) (see
+.BR pthreads (7)).
 .PP
 A futex is identified by a piece of memory which can be
 shared between processes or threads.