diff --git a/package/x11/qt/qt.conf b/package/x11/qt/qt.conf
index 89b08f3dd..8b8768313 100644
--- a/package/x11/qt/qt.conf
+++ b/package/x11/qt/qt.conf
@@ -64,8 +64,12 @@ qt_pass() {
 		  -I$pkg_postgresql_prefix/include -L$pkg_postgresql_prefix/lib"
  	fi
 
-	# an optimization crashes g++ during the Makefile generator build :-(
-	echo "yes" | ( CXX_WRAPPER_BYPASS=1 ; ./configure $confopt )
+	if [ $xpkg == qt3 ] ; then
+		# an optimization crashes g++ during the Makefile generator build :-(
+		echo "yes" | ( CXX_WRAPPER_BYPASS=1 ; ./configure $confopt )
+	elif [ $xpkg == qt4 ] ; then
+		echo -e 'o\nyes' | ./configure $confopt
+	fi
 
 	eval $MAKE ; eval $MAKE install
 
@@ -93,7 +97,7 @@ qt_pass() {
 		QT${xpkg:2:1}DIR=/$prefix
 		export QT${xpkg:2:1}DIR
 	EOT
-	# until kde 4 which will be based on qt4 the standard is qt3 here
+	# until kde4 which will be based on qt4 the standard is qt3 here
 	if [ $xpkg == "$ROCKCFG_PKG_QT_DEFAULT" ]; then
 		cat >> $root/etc/profile.d/$xpkg <<-EOT
 			QTDIR=\$QT${xpkg:2:1}DIR
diff --git a/package/x11/qt/qt.desc b/package/x11/qt/qt.desc
index 0b6a0541e..9c7d83b00 100644
--- a/package/x11/qt/qt.desc
+++ b/package/x11/qt/qt.desc
@@ -46,8 +46,8 @@
 #endif
 
 #if xpkg == qt4.*
-[V] 4.5.0
-[D] 3269396251 qt-x11-opensource-src-4.5.0.tar.bz2 ftp://ftp.trolltech.com/qt/source/
+[V] 4.5.1
+[D] 2447172668 qt-x11-opensource-src-4.5.1.tar.bz2 ftp://ftp.trolltech.com/qt/source/
 #endif
 
 [CD] <COPY> cp $cachedir/qt3.cache $confdir/$pkg.cache