diff --git a/articleview.cc b/articleview.cc
index 223e5f30..647683af 100644
--- a/articleview.cc
+++ b/articleview.cc
@@ -1928,7 +1928,6 @@ void ArticleView::contextMenuRequested( QPoint const & pos )
     else
     if( result == saveImageAction || result == saveSoundAction )
     {
-#if QT_VERSION >= 0x040600
 //      QUrl url = ( result == saveImageAction ) ? imageUrl : targetUrl;
       QUrl url =  targetUrl;
       QString savePath;
@@ -1978,7 +1977,6 @@ void ArticleView::contextMenuRequested( QPoint const & pos )
         emit storeResourceSavePath( QDir::toNativeSeparators( fileInfo.absoluteDir().absolutePath() ) );
         saveResource( url, ui.definition->url(), fileName );
       }
-#endif
     }
     else
     {
diff --git a/btreeidx.cc b/btreeidx.cc
index 8a0016bb..d4ef84f3 100644
--- a/btreeidx.cc
+++ b/btreeidx.cc
@@ -1495,9 +1495,7 @@ bool BtreeDictionary::getHeadwords( QStringList &headwords )
 
     if( setOfHeadwords.size() )
     {
-#if QT_VERSION >= 0x040700
       headwords.reserve( setOfHeadwords.size() );
-#endif
 
       QSet< QString >::const_iterator it = setOfHeadwords.constBegin();
       QSet< QString >::const_iterator end = setOfHeadwords.constEnd();
diff --git a/extlineedit.cc b/extlineedit.cc
index 89834d59..1fb445fa 100644
--- a/extlineedit.cc
+++ b/extlineedit.cc
@@ -2,12 +2,8 @@
  * Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
 
 #include "extlineedit.hh"
-
 #include <QPainter>
-
-#if QT_VERSION >= 0x040600
 #include <QPropertyAnimation>
-#endif
 
 ExtLineEdit::ExtLineEdit(QWidget *parent) :
     QLineEdit(parent)
@@ -179,7 +175,6 @@ void IconButton::paintEvent(QPaintEvent *)
 
 void IconButton::animate(bool visible)
 {
-#if QT_VERSION >= 0x040600
   QPropertyAnimation *animation = new QPropertyAnimation(this, "opacity");
   animation->setDuration(250);
   if (visible)
@@ -191,7 +186,4 @@ void IconButton::animate(bool visible)
     animation->setEndValue(0.0);
   }
   animation->start(QAbstractAnimation::DeleteWhenStopped);
-#else
-  setOpacity(visible ? 1.0 : 0.0);
-#endif
 }
diff --git a/gdappstyle.cc b/gdappstyle.cc
index 75305d1c..d9b31f50 100644
--- a/gdappstyle.cc
+++ b/gdappstyle.cc
@@ -3,8 +3,6 @@
 
 #include "gdappstyle.hh"
 
-#if QT_VERSION >= 0x040600
-
 #include "dictionarybar.hh"
 
 #include <QWidget>
@@ -53,5 +51,3 @@ bool GdAppStyle::dictionaryBarButton(const QWidget * widget) const {
 
   return false;
 }
-
-#endif // QT_VERSION
diff --git a/gdappstyle.hh b/gdappstyle.hh
index 006804fc..1b3bb9e1 100644
--- a/gdappstyle.hh
+++ b/gdappstyle.hh
@@ -5,9 +5,6 @@
 #define GDAPPSTYLE_HH
 
 #include <QtGlobal>
-
-#if QT_VERSION >= 0x040600
-
 #include <QStyle>
 #include <QProxyStyle>
 #include <QStyleOption>
@@ -30,6 +27,4 @@ private:
 
 };
 
-#endif // QT_VERSION
-
 #endif // GDAPPSTYLE_HH
diff --git a/groups_widgets.cc b/groups_widgets.cc
index 1a98a403..5775aba3 100644
--- a/groups_widgets.cc
+++ b/groups_widgets.cc
@@ -546,9 +546,7 @@ void DictListWidget::rowsAboutToBeRemoved( QModelIndex const & parent, int start
 DictGroupsWidget::DictGroupsWidget( QWidget * parent ):
   QTabWidget( parent ), nextId( 1 ), allDicts( 0 ), activeDicts( 0 )
 {
-#if QT_VERSION >= 0x040500
   setMovable( true );
-#endif
   setContextMenuPolicy( Qt::CustomContextMenu );
   connect( this, SIGNAL( customContextMenuRequested( QPoint ) ),
            this, SLOT( contextMenu( QPoint ) ) );
@@ -1023,9 +1021,7 @@ QuickFilterLine::QuickFilterLine( QWidget * parent ): ExtLineEdit( parent ), m_f
 {
   m_proxyModel.setFilterCaseSensitivity( Qt::CaseInsensitive );
 
-#if QT_VERSION >= 0x040700
   setPlaceholderText( tr( "Dictionary search/filter (Ctrl+F)" ) );
-#endif
 
   m_focusAction.setShortcut( QKeySequence( "Ctrl+F" ) );
   connect( &m_focusAction, SIGNAL( triggered() ),
diff --git a/langcoder.cc b/langcoder.cc
index 6d90f47a..90e00e90 100644
--- a/langcoder.cc
+++ b/langcoder.cc
@@ -353,11 +353,7 @@ bool LangCoder::isLanguageRTL( quint32 code )
     GDLangCode &lc = LangCodes[ langCoder.codeMap[ code ] ];
     if( lc.isRTL < 0 )
     {
-#if QT_VERSION >= 0x040700
       lc.isRTL = ( int )( QLocale( lc.code ).textDirection() == Qt::RightToLeft );
-#else
-      lc.isRTL = 0;
-#endif
     }
     return lc.isRTL != 0;
   }
diff --git a/main.cc b/main.cc
index 765a7561..26c38bff 100644
--- a/main.cc
+++ b/main.cc
@@ -310,9 +310,7 @@ int main( int argc, char ** argv )
 
   app.setApplicationName( "GoldenDict" );
   app.setOrganizationDomain( "http://goldendict.org/" );
-#if QT_VERSION >= 0x040600
   app.setStyle(new GdAppStyle);
-#endif
 
   #ifndef Q_OS_MAC
     app.setWindowIcon( QIcon( ":/icons/programicon.png" ) );
diff --git a/mainwindow.cc b/mainwindow.cc
index d4f13df4..1d7c658e 100644
--- a/mainwindow.cc
+++ b/mainwindow.cc
@@ -655,9 +655,7 @@ MainWindow::MainWindow( Config::Class & cfg_ ):
   connect( ui.tabWidget, SIGNAL( customContextMenuRequested(QPoint)) ,
            this, SLOT( tabMenuRequested(QPoint)) );
 
-#if QT_VERSION >= 0x040500
   ui.tabWidget->setTabsClosable( true );
-#endif
 
   connect( ui.quit, SIGNAL( triggered() ),
            this, SLOT( quitApp() ) );
diff --git a/translatebox.cc b/translatebox.cc
index 587688f9..cc73762f 100644
--- a/translatebox.cc
+++ b/translatebox.cc
@@ -98,10 +98,7 @@ TranslateBox::TranslateBox(QWidget *parent) : QWidget(parent),
 
   setFocusProxy(translate_line);
   translate_line->setObjectName("translateLine");
-#if QT_VERSION >= 0x040700
   translate_line->setPlaceholderText( tr( "Type a word or phrase to search dictionaries" ) );
-#endif
-
   word_list->setTranslateLine(translate_line);
 
   // completer = new QCompleter(m_completionList->model(), this);
diff --git a/xdxf.cc b/xdxf.cc
index 192daeaf..e32caef2 100644
--- a/xdxf.cc
+++ b/xdxf.cc
@@ -831,11 +831,7 @@ namespace {
 /// Deal with Qt 4.5 incompatibility
 QString readElementText( QXmlStreamReader & stream )
 {
-#if QT_VERSION >= 0x040600
     return stream.readElementText( QXmlStreamReader::SkipChildElements );
-#else
-    return stream.readElementText();
-#endif
 }
 
 }