diff --git a/kcmkwin/kwindecoration/decorationdelegate.h b/kcmkwin/kwindecoration/decorationdelegate.h
index a3e37649de..6e883b9d05 100644
--- a/kcmkwin/kwindecoration/decorationdelegate.h
+++ b/kcmkwin/kwindecoration/decorationdelegate.h
@@ -17,8 +17,8 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *********************************************************************/
-#ifndef PREVIEWDELEGATE_H
-#define PREVIEWDELEGATE_H
+#ifndef KWIN_DECORATIONDELEGATE_H
+#define KWIN_DECORATIONDELEGATE_H
 #include <QtGui/QStyledItemDelegate>
 
 class KPushButton;
@@ -42,4 +42,4 @@ class DecorationDelegate : public QStyledItemDelegate
 
 } // namespace KWin
 
-#endif // PREVIEWDELEGATE_H
+#endif // KWIN_DECORATIONDELEGATE_H
diff --git a/kcmkwin/kwindecoration/decorationmodel.h b/kcmkwin/kwindecoration/decorationmodel.h
index 9888ec731f..c73c529b6f 100644
--- a/kcmkwin/kwindecoration/decorationmodel.h
+++ b/kcmkwin/kwindecoration/decorationmodel.h
@@ -18,8 +18,8 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *********************************************************************/
 
-#ifndef PREVIEWMODEL_H
-#define PREVIEWMODEL_H
+#ifndef KWIN_DECORATIONMODEL_H
+#define KWIN_DECORATIONMODEL_H
 #include <QAbstractListModel>
 #include <QPixmap>
 #include <KConfig>
@@ -134,4 +134,4 @@ class DecorationModel : public QAbstractListModel
 
 } // namespace KWin
 
-#endif // PREVIEWMODEL_H
+#endif // KWIN_DECORATIONMODEL_H