diff --git a/samples/splitter/splitter.cpp b/samples/splitter/splitter.cpp
index c7789cc0f8..2cec8e6c8d 100644
--- a/samples/splitter/splitter.cpp
+++ b/samples/splitter/splitter.cpp
@@ -79,8 +79,7 @@ public:
 private:
   void UpdatePosition();
 
-  wxWindow *m_left,
-           *m_right;
+  wxScrolledWindow *m_left, *m_right;
 
   MySplitterWindow* m_splitter;