diff --git a/samples/client/petstore/qt5cpp/client/SWGPet.h b/samples/client/petstore/qt5cpp/client/SWGPet.h
index 3f9320f1507..e9cb4d08233 100644
--- a/samples/client/petstore/qt5cpp/client/SWGPet.h
+++ b/samples/client/petstore/qt5cpp/client/SWGPet.h
@@ -10,10 +10,10 @@
 #include <QJsonObject>
 
 
-#include <QString>
-#include "SWGCategory.h"
-#include <QList>
 #include "SWGTag.h"
+#include <QList>
+#include "SWGCategory.h"
+#include <QString>
 
 #include "SWGObject.h"
 
diff --git a/samples/client/petstore/qt5cpp/client/SWGPetApi.cpp b/samples/client/petstore/qt5cpp/client/SWGPetApi.cpp
index 0be3a197cd1..2171b8ed50c 100644
--- a/samples/client/petstore/qt5cpp/client/SWGPetApi.cpp
+++ b/samples/client/petstore/qt5cpp/client/SWGPetApi.cpp
@@ -431,7 +431,7 @@ SWGPetApi::updatePetWithFormCallback(HttpRequestWorker * worker) {
     emit updatePetWithFormSignal();
 }
 void
-SWGPetApi::deletePet(QString* apiKey, qint64 petId) {
+SWGPetApi::deletePet(qint64 petId, QString* apiKey) {
     QString fullPath;
     fullPath.append(this->host).append(this->basePath).append("/pet/{petId}");
 
diff --git a/samples/client/petstore/qt5cpp/client/SWGPetApi.h b/samples/client/petstore/qt5cpp/client/SWGPetApi.h
index 488865729b9..f74f8f10839 100644
--- a/samples/client/petstore/qt5cpp/client/SWGPetApi.h
+++ b/samples/client/petstore/qt5cpp/client/SWGPetApi.h
@@ -28,7 +28,7 @@ public:
     void findPetsByTags(QList<QString*>* tags);
     void getPetById(qint64 petId);
     void updatePetWithForm(QString* petId, QString* name, QString* status);
-    void deletePet(QString* apiKey, qint64 petId);
+    void deletePet(qint64 petId, QString* apiKey);
     void uploadFile(qint64 petId, QString* additionalMetadata, SWGHttpRequestInputFileElement* file);
     
 private: