diff --git a/civicrmapi4/civicrmapi4.py b/civicrmapi4/civicrmapi4.py
index f33dac8..404d368 100644
--- a/civicrmapi4/civicrmapi4.py
+++ b/civicrmapi4/civicrmapi4.py
@@ -82,7 +82,7 @@ class APIv4:
             "pass": password,
             "form_id": "user_login_block",
         }
-        res = self.session.post(self.base_url, data=postdata)
+        res = self.session.post("{0}/user".format(self.base_url), data=postdata)
         if (not res.ok):
             log.error("Login failed. Code: {}. Result: {}".format(res.status_code, res.text))
             # we should raise an error here.