diff --git a/samples/calendar/calendar.cpp b/samples/calendar/calendar.cpp
index 9874f0f547..af492450ce 100644
--- a/samples/calendar/calendar.cpp
+++ b/samples/calendar/calendar.cpp
@@ -17,11 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#if defined(__GNUG__) && !defined(__APPLE__)
-    #pragma implementation "calendar.cpp"
-    #pragma interface "calendar.cpp"
-#endif
-
 // For compilers that support precompilation, includes "wx/wx.h".
 #include "wx/wxprec.h"