diff --git a/ChangeLog b/ChangeLog
index 052e2f1aa1..7596ad5e6f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -15,7 +15,7 @@ Fri Apr 10 08:00:17 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
 Fri Apr 10 02:18:53 2015  Tanaka Akira  <akr@fsij.org>
 
 	* test/ruby/test_process.rb: Use mkfifo command instead of mknod
-	  command to create a named file.  mkfifo command is defined by POSIX.
+	  command to create a named pipe.  mkfifo command is defined by POSIX.
 
 Fri Apr 10 01:29:05 2015  Tanaka Akira  <akr@fsij.org>