diff -urNp -x '*.orig' gmp-6.2.1.org/doc/gmp.texi gmp-6.2.1/doc/gmp.texi
--- gmp-6.2.1.org/doc/gmp.texi	2020-11-14 19:45:09.000000000 +0100
+++ gmp-6.2.1/doc/gmp.texi	2021-03-21 12:57:05.678931009 +0100
@@ -64,9 +64,10 @@ software''.  A copy of the license is in
 @c  may want to search-and-replace to some online source.
 @c
 
-@dircategory GNU libraries
+@dircategory Libraries:
 @direntry
-* gmp: (gmp).                   GNU Multiple Precision Arithmetic Library.
+* gmp: (gmp).				GNU Multiple Precision Arithmetic
+					Library
 @end direntry
 
 @c  html <meta name="description" content="...">