diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 609ddc3942..c8a7efc3ea 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -16,6 +16,12 @@
    The license applies to all entries newer than 2009-04-28.
 */
 
+2012-05-05 20:30 UTC-0800 Pritpal Bedi (bedipritpal@hotmail.com)
+  * contrib/hbqt/hbmk2_qt.hbs
+    * Optimized: HB_ISLOG( n ) ? hb_parl( n ) : false | true )
+                    =>
+                 hb_parl( n ) | hb_parldef( n, true )
+
 2012-05-05 19:44 UTC-0800 Pritpal Bedi (bedipritpal@hotmail.com)
   * contrib/hbqt/hbmk2_qt.hbs
     ! Fixed: to take use of the hbqt_par_isDerivedFrom() completely.
diff --git a/harbour/contrib/hbqt/hbmk2_qt.hbs b/harbour/contrib/hbqt/hbmk2_qt.hbs
index e496935a9b..9121ee8bed 100644
--- a/harbour/contrib/hbqt/hbmk2_qt.hbs
+++ b/harbour/contrib/hbqt/hbmk2_qt.hbs
@@ -2692,7 +2692,7 @@ METHOD HbQtSource:parseProto( cProto, fBody_ )
          CASE oArg:cCast == "bool"
             s := "hb_parl( " + cHBIdx + " )"
             IF ! Empty( oArg:cDefault )
-               oArg:cBody := "( HB_ISLOG( " + cHBIdx + " ) ? " + s + " : " + oArg:cDefault + " )"
+               oArg:cBody := iif( oArg:cDefault == "false", s, "hb_parldef( " + cHBIdx + ", true )" )
             ELSE
                oArg:cBody := s
             ENDIF