diff --git a/scripts/_common.sh b/scripts/_common.sh
index 75318eb..f65469b 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -47,8 +47,8 @@ install_source() {
 }
 
 set_permission() {
-    chown -R "$app:$app" "$install_dir"/conf
-    chmod -R u+rwX,g-w,o= "$install_dir"/conf
+    chown -R "$app:$app" "$install_dir"/{conf,ccnet}
+    chmod -R u+rwX,g-w,o= "$install_dir"/{conf,ccnet}
     chown -R "$app:$app" "$install_dir"/seafile_image/opt/seafile
     chmod -R u+rwX,g-w,o= "$install_dir"/seafile_image/opt/seafile
 
diff --git a/scripts/install b/scripts/install
index 99785cb..b1c9021 100644
--- a/scripts/install
+++ b/scripts/install
@@ -49,8 +49,11 @@ ynh_script_progression --message="Configuring application..." --weight=3
 # Run install script
 set_permission
 ynh_replace_special_string --match_string='seafile_config.seafile_dir = seafile_config.validate_seafile_dir(seafile_dir)' \
-                           --replace_string 'seafile_config.seafile_dir = seafile_dir' \
-                           --target_file "$seafile_code/setup-seafile-mysql.py"
+                           --replace_string='seafile_config.seafile_dir = seafile_dir' \
+                           --target_file="$seafile_code/setup-seafile-mysql.py"
+ynh_replace_special_string --match_string="Utils.error('Ccnet config dir \\\"%s\\\" already exists.' % ccnet_config.ccnet_dir)" \
+                           --replace_string='patched = 1' \
+                           --target_file="$seafile_code/setup-seafile-mysql.py"
 run_seafile_cmd bash "/opt/seafile/seafile-server-$seafile_version/setup-seafile-mysql.sh" auto \
     --server-name "$server_name" \
     --server-ip "$domain" \