diff --git a/alertaclient/api.py b/alertaclient/api.py
index 9abcbe9..d75ae98 100644
--- a/alertaclient/api.py
+++ b/alertaclient/api.py
@@ -493,7 +493,7 @@ def housekeeping(self, expired_delete_hours=None, info_delete_hours=None):
             raise UnknownError(response.text)
 
     def escalate(self):
-        self.http.get('/escalate', auth=self.http.auth)
+        self.http.session.get(self.http.endpoint + '/escalate', auth=self.http.auth, timeout=self.http.timeout)
 
 
 class ApiKeyAuth(AuthBase):