diff --git a/modules/openapi-generator/src/main/resources/python/api_client.mustache b/modules/openapi-generator/src/main/resources/python/api_client.mustache
index c72873607448..f11b14d6d4d7 100644
--- a/modules/openapi-generator/src/main/resources/python/api_client.mustache
+++ b/modules/openapi-generator/src/main/resources/python/api_client.mustache
@@ -653,7 +653,7 @@ class ApiClient(object):
 
     def _apply_auth_params(self, headers, queries, resource_path, method, body, auth_setting):
         if auth_setting['in'] == 'cookie':
-            headers['Cookie'] = auth_setting['value']
+            headers['Cookie'] = auth_setting['key'] + "=" + auth_setting['value']
         elif auth_setting['in'] == 'header':
             if auth_setting['type'] != 'http-signature':
                 headers[auth_setting['key']] = auth_setting['value']