diff --git a/app/api/routes/_system.py b/app/api/routes/_system.py
index b801250..99d1c75 100644
--- a/app/api/routes/_system.py
+++ b/app/api/routes/_system.py
@@ -24,7 +24,7 @@ async def s_api_system(request):  # /api/node
         'services': {
             service_key: {
                 'status': service['status'],
-                'delay': int((datetime.now() - service['timestamp']).total_seconds()) if service['timestamp'] else -1,
+                'delay': round((datetime.now() - service['timestamp']).total_seconds(), 3) if service['timestamp'] else -1,
             }
             for service_key, service in request.app.ctx.memory.known_states.items()
         }