diff --git a/scripts/dev.sh b/scripts/dev.sh
index fa3b2d5d5..233830e7c 100644
--- a/scripts/dev.sh
+++ b/scripts/dev.sh
@@ -1,11 +1,11 @@
-#! /usr/bin/env bash
+#!/usr/bin/env bash
 # You can execute this file to install wallabag dev environment
 # eg: `sh dev.sh`
 
 COMPOSER_COMMAND='composer'
 
-DIR="${BASH_SOURCE%/*}"
-if [[ ! -d "$DIR" ]]; then DIR="$PWD"; fi
+DIR="${BASH_SOURCE}"
+if [[ ! -d "$DIR" ]]; then DIR="$PWD/scripts"; fi
 . "$DIR/require.sh"
 
 $COMPOSER_COMMAND install
diff --git a/scripts/install.sh b/scripts/install.sh
index 7a1f02bd8..e131929ce 100644
--- a/scripts/install.sh
+++ b/scripts/install.sh
@@ -1,11 +1,11 @@
-#! /usr/bin/env bash
+#!/usr/bin/env bash
 # You can execute this file to install wallabag
 # eg: `sh install.sh prod`
 
 COMPOSER_COMMAND='composer'
 
-DIR="${BASH_SOURCE%/*}"
-if [[ ! -d "$DIR" ]]; then DIR="$PWD"; fi
+DIR="${BASH_SOURCE}"
+if [[ ! -d "$DIR" ]]; then DIR="$PWD/scripts"; fi
 . "$DIR/require.sh"
 
 ENV=$1
diff --git a/scripts/update.sh b/scripts/update.sh
index 45e93f363..6fff8a723 100644
--- a/scripts/update.sh
+++ b/scripts/update.sh
@@ -1,11 +1,11 @@
-#! /usr/bin/env bash
+#!/usr/bin/env bash
 # You can execute this file to update wallabag
 # eg: `sh update.sh prod`
 
 COMPOSER_COMMAND='composer'
 
-DIR="${BASH_SOURCE%/*}"
-if [[ ! -d "$DIR" ]]; then DIR="$PWD"; fi
+DIR="${BASH_SOURCE}"
+if [[ ! -d "$DIR" ]]; then DIR="$PWD/scripts"; fi
 . "$DIR/require.sh"
 
 ENV=$1