diff --git a/src/lib/Server.js b/src/lib/Server.js
index cf6b26e..e204fa5 100644
--- a/src/lib/Server.js
+++ b/src/lib/Server.js
@@ -99,7 +99,8 @@ module.exports = class Server {
         const { clientId } = req.params;
         const client = await WireGuard.getClient({ clientId });
         const config = await WireGuard.getClientConfiguration({ clientId });
-        res.header('Content-Disposition', `attachment; filename="${client.name}.conf"`);
+        const configName = client.name.replace(/[^a-zA-Z0-9_=+.-]/g, '-').replace(/(-{2,}|-$)/g, '-').replace(/-$/, '').substring(0, 32);
+        res.header('Content-Disposition', `attachment; filename="${configName}.conf"`);
         res.header('Content-Type', 'text/plain');
         res.send(config);
       }))