diff --git a/filters/olefilters/powerpoint97/pptSlide.h b/filters/olefilters/powerpoint97/pptSlide.h
index 4297495e5..adf55710f 100644
--- a/filters/olefilters/powerpoint97/pptSlide.h
+++ b/filters/olefilters/powerpoint97/pptSlide.h
@@ -21,8 +21,8 @@ DESCRIPTION
 
 */
 
-//#ifndef PPTSLIDE_H
-//#define PPTSLIDE_H
+#ifndef PPTSLIDE_H
+#define PPTSLIDE_H
 
 #include <kdebug.h>
 #include <tqstring.h>
@@ -90,4 +90,4 @@ private:
 
 };
 
-//#endif
+#endif