diff --git a/gotrue/_sync/client.py b/gotrue/_sync/client.py
index 09e104a6..a55034dd 100644
--- a/gotrue/_sync/client.py
+++ b/gotrue/_sync/client.py
@@ -53,7 +53,7 @@ def __init__(
         cookie_options : CookieOptions
             The options for the cookie.
         """
-        if url.startswith("http"):
+        if url.startswith("http://"):
             print(
                 "Warning:\n\nDO NOT USE HTTP IN PRODUCTION FOR GOTRUE EVER!\n"
                 "GoTrue REQUIRES HTTPS to work securely."