4 files changed, 4 insertions, 15 deletions
diff --git a/io/source/acceptor/acceptor.hxx b/io/source/acceptor/acceptor.hxx
index a88f3728f5e7..0ebe00c9e372 100644
--- a/io/source/acceptor/acceptor.hxx
+++ b/io/source/acceptor/acceptor.hxx
@@ -17,8 +17,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#ifndef INCLUDED_IO_SOURCE_ACCEPTOR_ACCEPTOR_HXX
-#define INCLUDED_IO_SOURCE_ACCEPTOR_ACCEPTOR_HXX
+#pragma once
 
 #include <osl/pipe.hxx>
 #include <osl/socket.hxx>
@@ -71,6 +70,5 @@ namespace io_acceptor {
 
 }
 
-#endif // INCLUDED_IO_SOURCE_ACCEPTOR_ACCEPTOR_HXX
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/io/source/connector/connector.hxx b/io/source/connector/connector.hxx
index 9aad55a45dfa..a9321932798e 100644
--- a/io/source/connector/connector.hxx
+++ b/io/source/connector/connector.hxx
@@ -17,8 +17,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#ifndef INCLUDED_IO_SOURCE_CONNECTOR_CONNECTOR_HXX
-#define INCLUDED_IO_SOURCE_CONNECTOR_CONNECTOR_HXX
+#pragma once
 
 #include <cppuhelper/implbase.hxx>
 
@@ -90,6 +89,5 @@ namespace stoc_connector
     };
 }
 
-#endif // INCLUDED_IO_SOURCE_CONNECTOR_CONNECTOR_HXX
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/io/source/stm/streamhelper.hxx b/io/source/stm/streamhelper.hxx
index c1bb1b7db748..6d49003e9d77 100644
--- a/io/source/stm/streamhelper.hxx
+++ b/io/source/stm/streamhelper.hxx
@@ -17,8 +17,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#ifndef INCLUDED_IO_SOURCE_STM_STREAMHELPER_HXX
-#define INCLUDED_IO_SOURCE_STM_STREAMHELPER_HXX
+#pragma once
 
 #include <com/sun/star/uno/Sequence.hxx>
 
@@ -83,6 +82,4 @@ public:
 
 }
 
-#endif // INCLUDED_IO_SOURCE_STM_STREAMHELPER_HXX
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/io/test/stm/testfactreg.hxx b/io/test/stm/testfactreg.hxx
index 2dbff6d62d2b..7952867b4912 100644
--- a/io/test/stm/testfactreg.hxx
+++ b/io/test/stm/testfactreg.hxx
@@ -17,9 +17,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#ifndef INCLUDED_IO_TEST_STM_TESTFACTREG_HXX
-#define INCLUDED_IO_TEST_STM_TESTFACTREG_HXX
-
+#pragma once
 #include <rtl/strbuf.hxx>
 
 Reference< XInterface > SAL_CALL OPipeTest_CreateInstance( const Reference< XMultiServiceFactory > & rSMgr ) throw( Exception );
@@ -106,6 +104,4 @@ Sequence<sal_Int8> createIntSeq( sal_Int32 i );
         }\
         ((void)0)
 
-#endif // INCLUDED_IO_TEST_STM_TESTFACTREG_HXX
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */