diff --git a/samples/opengl/isosurf/isosurf.cpp b/samples/opengl/isosurf/isosurf.cpp
index 2138a85c26..707b48c424 100644
--- a/samples/opengl/isosurf/isosurf.cpp
+++ b/samples/opengl/isosurf/isosurf.cpp
@@ -57,7 +57,7 @@ bool MyApp::OnInit()
         return false;
 
     // Create the main frame window
-    MyFrame *frame = new MyFrame(NULL, wxT("wxWidgets OpenGL Isosurf Sample"));
+    new MyFrame(NULL, wxT("wxWidgets OpenGL Isosurf Sample"));
 
     return true;
 }