diff --git a/Doc/lib/lib.tex b/Doc/lib/lib.tex
index 9a66a44..5425f3e 100644
--- a/Doc/lib/lib.tex
+++ b/Doc/lib/lib.tex
@@ -147,7 +147,6 @@
 \input{libshutil}
 \input{liblocale}
 \input{libgettext}
-\input{libmutex}
 
 \input{libsomeos}		% Optional Operating System Services
 \input{libsignal}
@@ -155,6 +154,7 @@
 \input{libselect}
 \input{libthread}
 \input{libthreading}
+\input{libmutex}
 \input{libqueue}
 \input{libmmap}
 \input{libanydbm}