diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index 5b19cb0fe5..2b366308ce 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -16,6 +16,12 @@
    The license applies to all entries newer than 2009-04-28.
 */
 
+2011-11-17 10:47 UTC-0800 Pritpal Bedi (bedipritpal@hotmail.com)
+  * contrib/hbqt/qtcore/qth/QLibraryInfo.qth
+    ! Guarded: QLibraryInfo::buildDate() to be avialble 
+       only for Qt 4.6 and above. Function call stays as is, only 
+       return value will be nil.
+
 2011-11-17 09:46 UTC+0100 Przemyslaw Czerpak (druzus/at/priv.onet.pl)
   * harbour/contrib/hbwin/hbwapi.h
   * harbour/contrib/hbwin/wapi_winbase.c
diff --git a/harbour/contrib/hbqt/qtcore/qth/QLibraryInfo.qth b/harbour/contrib/hbqt/qtcore/qth/QLibraryInfo.qth
index dfd194d12c..0fe71c430a 100644
--- a/harbour/contrib/hbqt/qtcore/qth/QLibraryInfo.qth
+++ b/harbour/contrib/hbqt/qtcore/qth/QLibraryInfo.qth
@@ -46,7 +46,9 @@ enum LibraryLocation { PrefixPath, DocumentationPath, HeadersPath, LibrariesPath
 
 <PROTOS>
 QDate buildDate (){
+#if QT_VERSION >= 0x040600
    hbqt_create_objectGC( hbqt_gcAllocate_QDate( new QDate( QLibraryInfo::buildDate() ), true ) , "HB_QDATE" );   
+#endif
 }
 QString buildKey (){
    hb_retstr_utf8( QLibraryInfo::buildKey().toUtf8().data() );