diff --git a/modules/swagger-codegen/src/main/resources/php/ApiClient.mustache b/modules/swagger-codegen/src/main/resources/php/ApiClient.mustache
index e2193b1d754..11fe3827d48 100644
--- a/modules/swagger-codegen/src/main/resources/php/ApiClient.mustache
+++ b/modules/swagger-codegen/src/main/resources/php/ApiClient.mustache
@@ -69,7 +69,7 @@ class ApiClient
      * Constructor of the class
      * @param Configuration $config config for this ApiClient
      */
-    function __construct(Configuration $config = null)
+    public function __construct(Configuration $config = null)
     {
         if ($config == null) {
             $config = Configuration::getDefaultConfiguration();