diff --git a/ChangeLog b/ChangeLog
index de0961a71a..7324454287 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,7 +3,7 @@ Thu Jul 16 22:05:29 2015  Koichi Sasada  <ko1@atdot.net>
 	* vm_core.h: constify rb_iseq_t::parent_iseq.
 
 	  rb_iseq_t::local_iseq is not constant data because
-	  local_iseq::flip_cnt can be modified (commentted).
+	  local_iseq::flip_cnt can be modified (commented).
 
 	* compile.c: catch up this fix.
 
@@ -13,7 +13,7 @@ Thu Jul 16 22:05:29 2015  Koichi Sasada  <ko1@atdot.net>
 
 Thu Jul 16 21:47:47 2015  Naohisa Goto  <ngotogenome@gmail.com>
 
-	* process.c (redirect_dup2): when the new FD of dup2() coflicts
+	* process.c (redirect_dup2): when the new FD of dup2() conflicts
 	  with one of the timer thread FDs, the internal FD is diverted.
 	  [Bug #11336] [ruby-core:69886] [Bug #11350] [ruby-core:69961]