Dear Maintainer,
diff --git a/etc.bash.bashrc b/etc.bash.bashrc
index 54687b1..c01e89a 100644
--- a/etc.bash.bashrc
+++ b/etc.bash.bashrc
@@ -41 +41 @@ PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
-if [ -x /usr/lib/command-not-found -o -x /usr/share/command-not-found/command-not-found ]; then
+if [[ -x /usr/lib/command-not-found || -x /usr/share/command-not-found/command-not-found ]]; then