diff --git a/openapi-cli/src/test/resources/expected_gen/petstore_catch_all_path_client.bal b/openapi-cli/src/test/resources/expected_gen/petstore_catch_all_path_client.bal
index 7367bd17f..9111a7ccf 100644
--- a/openapi-cli/src/test/resources/expected_gen/petstore_catch_all_path_client.bal
+++ b/openapi-cli/src/test/resources/expected_gen/petstore_catch_all_path_client.bal
@@ -38,7 +38,7 @@ public isolated client class Client {
         if config.auth is ApiKeysConfig {
             self.apiKeyConfig = (<ApiKeysConfig>config.auth).cloneReadOnly();
         } else {
-            config.auth = <http:BearerTokenConfig>config.auth;
+            httpClientConfig.auth = <http:BearerTokenConfig>config.auth;
             self.apiKeyConfig = ();
         }
         http:Client httpEp = check new (serviceUrl, httpClientConfig);
diff --git a/openapi-cli/src/test/resources/expected_gen/petstore_client_swagger.bal b/openapi-cli/src/test/resources/expected_gen/petstore_client_swagger.bal
index 758c64281..94a4dd4bb 100644
--- a/openapi-cli/src/test/resources/expected_gen/petstore_client_swagger.bal
+++ b/openapi-cli/src/test/resources/expected_gen/petstore_client_swagger.bal
@@ -39,7 +39,7 @@ public isolated client class Client {
         if config.auth is ApiKeysConfig {
             self.apiKeyConfig = (<ApiKeysConfig>config.auth).cloneReadOnly();
         } else {
-            config.auth = <http:BearerTokenConfig>config.auth;
+            httpClientConfig.auth = <http:BearerTokenConfig>config.auth;
             self.apiKeyConfig = ();
         }
         http:Client httpEp = check new (serviceUrl, httpClientConfig);
diff --git a/openapi-cli/src/test/resources/generators/client/ballerina/combination_of_apikey_and_http_oauth.bal b/openapi-cli/src/test/resources/generators/client/ballerina/combination_of_apikey_and_http_oauth.bal
index 01f653ddf..254cbf75e 100644
--- a/openapi-cli/src/test/resources/generators/client/ballerina/combination_of_apikey_and_http_oauth.bal
+++ b/openapi-cli/src/test/resources/generators/client/ballerina/combination_of_apikey_and_http_oauth.bal
@@ -34,7 +34,7 @@ public isolated client class Client {
         if config.auth is ApiKeysConfig {
             self.apiKeyConfig = (<ApiKeysConfig>config.auth).cloneReadOnly();
         } else {
-            config.auth = <OAuth2ClientCredentialsGrantConfig|http:BearerTokenConfig|OAuth2RefreshTokenGrantConfig>config.auth;
+            httpClientConfig.auth = <OAuth2ClientCredentialsGrantConfig|http:BearerTokenConfig|OAuth2RefreshTokenGrantConfig>config.auth;
             self.apiKeyConfig = ();
         }
         http:Client httpEp = check new (serviceUrl, httpClientConfig);