diff --git a/ChangeLog b/ChangeLog
index a153779156bc7c..5cdba6e4085596 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Mon Dec 14 11:25:57 2015  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
+
+	* benchmark/bm_app_aobench.rb: fix typos.
+	  [ci skip][fix GH-1140] Patch by @jutaz
+	* benchmark/bm_vm_thread_pipe.rb: ditto.
+
 Sun Dec 13 23:46:10 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* parse.y (trace_lex_state): trace lex_state changes if yydebug is
diff --git a/benchmark/bm_app_aobench.rb b/benchmark/bm_app_aobench.rb
index ffab116fcd7872..2bd6acfaf85aac 100644
--- a/benchmark/bm_app_aobench.rb
+++ b/benchmark/bm_app_aobench.rb
@@ -229,7 +229,7 @@ def render(w, h, nsubsamples)
       w.times do |x|
         rad = Vec.new(0.0, 0.0, 0.0)
 
-        # Subsmpling
+        # Subsampling
         nsubsamples.times do |v|
           nsubsamples.times do |u|
 
diff --git a/benchmark/bm_vm_thread_pipe.rb b/benchmark/bm_vm_thread_pipe.rb
index 272d231ebad428..112a6219051669 100644
--- a/benchmark/bm_vm_thread_pipe.rb
+++ b/benchmark/bm_vm_thread_pipe.rb
@@ -1,4 +1,4 @@
-# Mesure small and plenty pipe read/write.
+# Measure small and plenty pipe read/write.
 # A performance may depend on GVL implementation.
 
 lmax = 100_000