diff --git a/editor/emacs/install b/editor/emacs/install
index 56b297c0..5148b23d 100755
--- a/editor/emacs/install
+++ b/editor/emacs/install
@@ -7,20 +7,18 @@ case "$OSTYPE" in
         brew install emacs-mac --with-imagemagick --with-modern-icon --HEAD
         ;;
     linux*)
-        if [ -f /etc/arch-release ]; then
+        if [[ -f /etc/arch-release ]]; then
             sudo pacman --noconfirm -S make emacs python2
-        elif [ -f /etc/debian_version ]; then
+        elif [[ -f /etc/debian_version ]]; then
             sudo apt-get install make emacs python
         fi
 
-        if [ ! -d ~/.cask ]
-        then
+        if [[ ! -d ~/.cask ]]; then
             curl -fsSL https://raw.githubusercontent.com/cask/cask/master/go | python
         fi
 esac
 
-if [ ! -d "$HOME/.emacs.d" ];
-then
+if [[ ! -d "$HOME/.emacs.d" ]]; then
     git clone --recursive "hlissner/.emacs.d" "$HOME/.emacs.d"
     cd "$HOME/.emacs.d"
     make install