diff --git a/examples-v2/qt-ui/main.cpp b/examples-v2/qt-ui/main.cpp
index fcd12c1c3..c455b36e5 100644
--- a/examples-v2/qt-ui/main.cpp
+++ b/examples-v2/qt-ui/main.cpp
@@ -1,4 +1,4 @@
-#include "hello_world_widget.hpp"
+#include "hello_world_widget.h"
 #include <qapplication.h>
 
 #include <qpushbutton.h>
diff --git a/v2/example/qt-ui/main.cpp b/v2/example/qt-ui/main.cpp
index fcd12c1c3..c455b36e5 100644
--- a/v2/example/qt-ui/main.cpp
+++ b/v2/example/qt-ui/main.cpp
@@ -1,4 +1,4 @@
-#include "hello_world_widget.hpp"
+#include "hello_world_widget.h"
 #include <qapplication.h>
 
 #include <qpushbutton.h>