diff --git a/ChangeLog b/ChangeLog
index e1e948a452..47822b665a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+Wed Jun 15 04:28:39 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* benchmark/bm_vm4_thread_pass.rb: rename bm_vm4* to
+	  bm_vm_thread_*. suggested by ko1.
+	* benchmark/bm_vm4_pipe.rb: ditto.
+	* benchmark/bm_vm4_alive_check1.rb: ditto.
+	* benchmark/bm_vm4_pass_flood.rb: ditto.
+
 Wed Jun 15 03:52:50 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* benchmark/bm_vm4_pass_flood.rb: new benchmark for GVL fairness.
diff --git a/benchmark/bm_vm4_alive_check1.rb b/benchmark/bm_vm_thread_alive_check1.rb
similarity index 100%
rename from benchmark/bm_vm4_alive_check1.rb
rename to benchmark/bm_vm_thread_alive_check1.rb
diff --git a/benchmark/bm_vm4_thread_pass.rb b/benchmark/bm_vm_thread_pass.rb
similarity index 100%
rename from benchmark/bm_vm4_thread_pass.rb
rename to benchmark/bm_vm_thread_pass.rb
diff --git a/benchmark/bm_vm4_pass_flood.rb b/benchmark/bm_vm_thread_pass_flood.rb
similarity index 100%
rename from benchmark/bm_vm4_pass_flood.rb
rename to benchmark/bm_vm_thread_pass_flood.rb
diff --git a/benchmark/bm_vm4_pipe.rb b/benchmark/bm_vm_thread_pipe.rb
similarity index 100%
rename from benchmark/bm_vm4_pipe.rb
rename to benchmark/bm_vm_thread_pipe.rb