diff --git a/src/snowflake/connector/auth/okta.py b/src/snowflake/connector/auth/okta.py
index cab810f1f..caefed2a6 100644
--- a/src/snowflake/connector/auth/okta.py
+++ b/src/snowflake/connector/auth/okta.py
@@ -39,7 +39,7 @@ def _is_prefix_equal(url1, url2):
     port1 = parsed_url1.port
     if not port1 and parsed_url1.scheme == "https":
         port1 = "443"
-    port2 = parsed_url1.port
+    port2 = parsed_url2.port
     if not port2 and parsed_url2.scheme == "https":
         port2 = "443"