diff --git a/ChangeLog b/ChangeLog
index ebe1553483..3428c7bca0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,8 +3,8 @@
 	* nis/nis_findserv.c (__nis_findfastest_with_timeout): Mostly the code
 	from __nis_findfastest.  Take timeout value from parameter.
 	(__nis_findfastest): Call __nis_findfastest_with_timeout repeatedly.
-	* nis/nis_intern.h: Define parameters controlling __nis_findfastest.
-	Patch by Alexander Belopolsky <alexb@rentec.com>.
+	* nis/nis_intern.h: Define parameters controlling __nis_findfastest
+	[PR libc/2520].  Patch by Alexander Belopolsky <alexb@rentec.com>.
 
 2001-12-12  Andreas Jaeger  <aj@suse.de>