diff --git a/scripts/install b/scripts/install
index ab15b95..8454ce9 100755
--- a/scripts/install
+++ b/scripts/install
@@ -32,7 +32,7 @@ ynh_setup_source --dest_dir="$install_dir"
 
 chmod -R o-rwx "$install_dir"
 chown -R "$app:www-data" "$install_dir"
-
+chmod -R 750 "$install_dir"
 
 #=================================================
 # SPECIFIC SETUP
@@ -69,10 +69,6 @@ ynh_add_fpm_config
 # Create a dedicated NGINX config
 ynh_add_nginx_config
 
-
-# chmod again to fix unaccessible templates / css files
-chmod -R 755 "$install_dir"
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 661bb5f..6e43d11 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -19,6 +19,7 @@ ynh_restore_file --origin_path="$install_dir"
 
 chmod -R o-rwx "$install_dir"
 chown -R "$app:www-data" "$install_dir"
+chmod -R 750 "$install_dir"
 
 #=================================================
 # RESTORE SYSTEM CONFIGURATIONS
diff --git a/scripts/upgrade b/scripts/upgrade
index 117c6da..2a5cd3f 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -53,9 +53,9 @@ ynh_script_progression --message="Upgrading source files..." --weight=3
 # Download, check integrity, uncompress and patch the source from app.src
 ynh_setup_source --dest_dir="$install_dir" --keep="config.php pheditor.php menu.php config.t2t var/pages/main.txt var/pages/todo.txt var/pages/sandbox.txt var/pages/links.txt var/pages/admin.txt"
 
-
 chmod -R o-rwx "$install_dir"
 chown -R "$app:www-data" "$install_dir"
+chmod -R 750 "$install_dir"
 
 #=================================================
 # STORE THE CONFIG FILE CHECKSUM