diff --git a/vcl/inc/skia/gdiimpl.hxx b/vcl/inc/skia/gdiimpl.hxx
index b879872a8bca..71f5cce8aae6 100644
--- a/vcl/inc/skia/gdiimpl.hxx
+++ b/vcl/inc/skia/gdiimpl.hxx
@@ -17,8 +17,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#ifndef INCLUDED_VCL_SKIA_GDIIMPL_HXX
-#define INCLUDED_VCL_SKIA_GDIIMPL_HXX
+#pragma once
 
 #include <vcl/dllapi.h>
 
@@ -436,6 +435,4 @@ inline SkPaint SkiaSalGraphicsImpl::makePixelPaint(std::optional<Color> color) c
     return paint;
 }
 
-#endif
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/skia/salbmp.hxx b/vcl/inc/skia/salbmp.hxx
index c42aa30f4654..639436346d61 100644
--- a/vcl/inc/skia/salbmp.hxx
+++ b/vcl/inc/skia/salbmp.hxx
@@ -17,8 +17,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#ifndef INCLUDED_VCL_INC_SKIA_SALBMP_H
-#define INCLUDED_VCL_INC_SKIA_SALBMP_H
+#pragma once
 
 #include <salbmp.hxx>
 #include <vcl/bitmap.hxx>
@@ -226,6 +225,4 @@ private:
 #endif
 };
 
-#endif // INCLUDED_VCL_INC_SKIA_SALBMP_H
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/strhelper.hxx b/vcl/inc/strhelper.hxx
index 7793418334e1..e8f085864139 100644
--- a/vcl/inc/strhelper.hxx
+++ b/vcl/inc/strhelper.hxx
@@ -16,8 +16,7 @@
  *   except in compliance with the License. You may obtain a copy of
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
-#ifndef INCLUDED_VCL_STRHELPER_HXX
-#define INCLUDED_VCL_STRHELPER_HXX
+#pragma once
 
 #include <rtl/math.hxx>
 #include <rtl/ustring.hxx>
@@ -49,6 +48,4 @@ namespace psp
 
 } // namespace
 
-#endif // INCLUDED_VCL_STRHELPER_HXX
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/strings.hxx b/vcl/inc/strings.hxx
index 45e9b2af4310..b4cf785ffc49 100644
--- a/vcl/inc/strings.hxx
+++ b/vcl/inc/strings.hxx
@@ -7,11 +7,8 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-#ifndef INCLUDED_VCL_INC_STRINGS_HXX
-#define INCLUDED_VCL_INC_STRINGS_HXX
+#pragma once
 
 #define SV_APP_VCLBACKEND "VCL: "
 
-#endif
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
diff --git a/xmloff/source/chart/ColorPropertySet.hxx b/xmloff/source/chart/ColorPropertySet.hxx
index d73bf48be0d9..e623c39afde8 100644
--- a/xmloff/source/chart/ColorPropertySet.hxx
+++ b/xmloff/source/chart/ColorPropertySet.hxx
@@ -16,8 +16,8 @@
  *   except in compliance with the License. You may obtain a copy of
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
-#ifndef XMLOFF_COLORPROPERTYSET_HXX
-#define XMLOFF_COLORPROPERTYSET_HXX
+
+#pragma once
 
 #include <cppuhelper/implbase.hxx>
 #include <tools/color.hxx>
@@ -76,7 +76,5 @@ private:
 
 } //  namespace xmloff::chart
 
-// XMLOFF_COLORPROPERTYSET_HXX
-#endif
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */