diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 55c6555282..73e8ff4085 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -16,6 +16,10 @@
    The license applies to all entries newer than 2009-04-28.
 */
 
+2012-03-07 20:25 UTC+0100 Viktor Szakats (harbour syenar.net)
+  * contrib/hbhpdf/harupdf.ch
+    ! fixed two constants
+
 2012-03-06 16:47 UTC-0800 Pritpal Bedi (bedipritpal@hotmail.com)
   * contrib/hbide/hbide.hbp
   * contrib/hbide/ideactions.prg
diff --git a/harbour/contrib/hbhpdf/harupdf.ch b/harbour/contrib/hbhpdf/harupdf.ch
index 43bd44c273..5f8465f70f 100644
--- a/harbour/contrib/hbhpdf/harupdf.ch
+++ b/harbour/contrib/hbhpdf/harupdf.ch
@@ -288,8 +288,8 @@
 
 //----------------------------------------------------------------------//
 
-#define  HPDF_TRUE                          1
-#define  HPDF_FALSE                         0
+#define  HPDF_TRUE                          .T.
+#define  HPDF_FALSE                         .F.
 
 #define  HPDF_OK                            0
 #define  HPDF_NOERROR                       0