diff --git a/homeassistant/components/growatt_server/const.py b/homeassistant/components/growatt_server/const.py
index 0b11e9994ca..e0297de5eff 100644
--- a/homeassistant/components/growatt_server/const.py
+++ b/homeassistant/components/growatt_server/const.py
@@ -7,7 +7,7 @@ DEFAULT_NAME = "Growatt"
 
 SERVER_URLS = [
     "https://server.growatt.com/",
-    "https://server-us.growatt.com",
+    "https://server-us.growatt.com/",
     "http://server.smten.com/",
 ]