diff --git a/samples/wrapsizer/wrapsizer.cpp b/samples/wrapsizer/wrapsizer.cpp
index 4d0c6d6505..df172e3c90 100644
--- a/samples/wrapsizer/wrapsizer.cpp
+++ b/samples/wrapsizer/wrapsizer.cpp
@@ -146,6 +146,8 @@ WrapSizerFrame::WrapSizerFrame()
     // Set sizer for the panel
     m_panel->SetSizer(sizerRoot);
 
+    SetClientSize(m_panel->GetBestSize());
+
     Show();
 }