diff --git a/.bashrc b/.bashrc
index 815f35a..2d5b44e 100644
--- a/.bashrc
+++ b/.bashrc
@@ -56,8 +56,8 @@ PS1="$PS1"'\[\033[00m\]\$ '                 # shell sign
 
 # history settings
 HISTSIZE=2048
-HISTFILESIZE=2048
 HISTCONTROL=erasedups:ignoredups:ignorespace
+HISTIGNORE='exit*:clear*:\:*:echo*'
 
 #
 # bash completion