diff --git a/roles/bash/files/profile b/roles/bash/files/profile
index 24b80c8..8f802e3 100644
--- a/roles/bash/files/profile
+++ b/roles/bash/files/profile
@@ -40,7 +40,7 @@ export VIMINIT='let $MYVIMRC="$XDG_CONFIG_HOME/vim/vimrc" | source $MYVIMRC'
 [ "$(uname)" == "Darwin" ] && { PATH=""; source /etc/profile; }
 
 prepend_dir() {   # 1: dir to add, 2: variable to manipulate
-    [ -d "$1" -a -n "$2" ] || return
+    [ -d "$1" ] && [ -n "$2" ] || return
     local list="${!2}"                      # capture current value
     list=${list#"$1:"}                      # remove dir from beginning
     list=${list//":$1:"/:}                  # remove dir from middle