diff --git a/samples/client/petstore/typescript-axios/builds/with-fake-endpoints-models-for-testing-with-http-signature/api.ts b/samples/client/petstore/typescript-axios/builds/with-fake-endpoints-models-for-testing-with-http-signature/api.ts
index 44ad2dc5a0a..832e63b1f4e 100644
--- a/samples/client/petstore/typescript-axios/builds/with-fake-endpoints-models-for-testing-with-http-signature/api.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-fake-endpoints-models-for-testing-with-http-signature/api.ts
@@ -1961,7 +1961,7 @@ export const FakeApiAxiosParamCreator = function (configuration?: Configuration)
             }
 
             if (enumFormStringArray) {
-                localVarFormParams.set(enumFormStringArray.join(COLLECTION_FORMATS.csv));
+                localVarFormParams.set('enum_form_string_array', enumFormStringArray.join(COLLECTION_FORMATS.csv));
             }