diff --git a/main.py b/main.py
index 5c49be5..8397502 100644
--- a/main.py
+++ b/main.py
@@ -87,7 +87,7 @@ while True:
         else:
             container_id_run = call(f"echo $(docker ps -q -f name=infra_nginx)").out
 
-        restart = call("docker exec {container_id_run} python3 prepare.py && nginx -s reload")
+        restart = call(f"docker exec {container_id_run} python3 prepare.py && nginx -s reload")
         print(restart.out + restart.err)
 
     time.sleep(30)