diff --git a/files/zshrc/base.sh b/files/zshrc/base.sh
index 3fdd3f2..3dbf6db 100644
--- a/files/zshrc/base.sh
+++ b/files/zshrc/base.sh
@@ -20,5 +20,3 @@ alias grep='grep --color=auto'
 alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'
 
 [ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"
-
-# don't put duplicate lines or lines starting with space in the history.