diff --git a/install.sh b/install.sh
index 625da97..f862d0a 100755
--- a/install.sh
+++ b/install.sh
@@ -1,24 +1,22 @@
-#!/bin/bash
+#!/bin/sh
 
 SCRIPT=$(readlink -f "$0")
 SCRIPTPATH=$(dirname "$SCRIPT")
-HOST=`hostname`
+HOST=$(hostname)
 
 # List of the config files to install
 FILES="vimrc zshrc gitconfig vim gitignore_global git_user"
 
-if [[ ! -e $HOME/.git_user ]]
-then
-    cp $SCRIPTPATH/git_user.def $SCRIPTPATH/git_user
-    sed -i -e "s/{username}/$USER/" $SCRIPTPATH/git_user
-    sed -i -e "s/{email}/$USER@$HOST/" $SCRIPTPATH/git_user
+if [ ! -e "$HOME/.git_user" ]; then
+    cp "$SCRIPTPATH/git_user.def" "$SCRIPTPATH/git_user"
+    sed -i -e "s/{username}/$USER/" "$SCRIPTPATH/git_user"
+    sed -i -e "s/{email}/$USER@$HOST/" "$SCRIPTPATH/git_user"
 fi
 
 # Create symbolic links in the user's home dir
 for file in $FILES
 do
-    if [ ! -e $HOME/.${file} ]
-    then
-        ln -s ${SCRIPTPATH}/${file} $HOME/.${file}
+    if [ ! -e "$HOME/.${file}" ]; then
+        ln -s "${SCRIPTPATH}/${file}" "$HOME/.${file}"
     fi
 done
diff --git a/zshrc b/zshrc
index 701812f..75214fb 100644
--- a/zshrc
+++ b/zshrc
@@ -18,7 +18,7 @@ RC_PATH=$(dirname "$(readlink -f ${(%):-%x})")
 
 
 # Import utility functions
-. $RC_PATH/functions
+. "$RC_PATH/functions"
 
 
 # Check for rc updates
@@ -50,7 +50,7 @@ alias steam="LD_PRELOAD='/usr/\$LIB/libstdc++.so.6 /usr/\$LIB/libgcc_s.so.1 /usr
 
 
 # Configuration pour minecraft
-alias minecraft="java -jar $HOME/.minecraft/launcher.jar"
+alias minecraft='java -jar $HOME/.minecraft/launcher.jar'
 
 
 # Easy dwm recompile on arch
@@ -273,13 +273,13 @@ setopt correct
 # Syntax coloration for man
 man() {
   env \
-    LESS_TERMCAP_mb=$(printf "$fg_bold[red]") \
-    LESS_TERMCAP_md=$(printf "$fg_bold[red]") \
-    LESS_TERMCAP_me=$(printf "$reset_color") \
-    LESS_TERMCAP_se=$(printf "$reset_color") \
-    LESS_TERMCAP_so=$(printf "$bg[black]$fg[yellow]") \
-    LESS_TERMCAP_ue=$(printf "$reset_color") \
-    LESS_TERMCAP_us=$(printf "$fg_bold[blue]") \
+    LESS_TERMCAP_mb="$(printf "%s" "$fg_bold[red]")" \
+    LESS_TERMCAP_md="$(printf "%s" "$fg_bold[red]")" \
+    LESS_TERMCAP_me="$(printf "%s" "$reset_color")" \
+    LESS_TERMCAP_se="$(printf "%s" "$reset_color")" \
+    LESS_TERMCAP_so="$(printf "%s" "$bg[black]$fg[yellow]")" \
+    LESS_TERMCAP_ue="$(printf "%s" "$reset_color")" \
+    LESS_TERMCAP_us="$(printf "%s" "$fg_bold[blue]")" \
     man "$@"
 }
 # source ~/.zs/zsh-syntax-highlighting.zsh
@@ -293,4 +293,4 @@ man() {
 # fi
 
 # ZSH syntax highlighting : /!\ keep at the bottom !
-source ${RC_PATH}/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh
+source "${RC_PATH}/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh"