diff --git a/avmedia/source/win/manager.hxx b/avmedia/source/win/manager.hxx
index 8fee893f9177..54cda28390bf 100644
--- a/avmedia/source/win/manager.hxx
+++ b/avmedia/source/win/manager.hxx
@@ -17,8 +17,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#ifndef INCLUDED_AVMEDIA_SOURCE_WIN_MANAGER_HXX
-#define INCLUDED_AVMEDIA_SOURCE_WIN_MANAGER_HXX
+#pragma once
 
 #include "wincommon.hxx"
 #include <cppuhelper/implbase.hxx>
@@ -50,6 +49,4 @@ private:
 } // namespace win
 } // namespace avmedia
 
-#endif // INCLUDED_AVMEDIA_SOURCE_WIN_MANAGER_HXX
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */