diff --git a/dot_bashrc.d/executable_00.bash.init b/dot_bashrc.d/executable_00.bash.init
index 7e7d8e6..6e4767a 100644
--- a/dot_bashrc.d/executable_00.bash.init
+++ b/dot_bashrc.d/executable_00.bash.init
@@ -6,5 +6,6 @@ HISTSIZE=3000
 HISTFILESIZE=3000
 export HISTTIMEFORMAT="%Y-%m-%d %H:%M:%S "
 export HISTIGNORE=$'[ \t]*:&:[fb]g:exit:ls:ll:cd:pwd:history:z'
+export HISTCONTROL=$HISTCONTROL${HISTCONTROL+,}ignoredups
 
 # inspired (but not all commands used) by https://github.com/jdcapa/bashrc.d/blob/main/00.bash.init