diff --git a/src/iconprovider.cpp b/src/iconprovider.cpp
index 08a536470..980f879d5 100644
--- a/src/iconprovider.cpp
+++ b/src/iconprovider.cpp
@@ -35,7 +35,7 @@ IconProvider* IconProvider::m_instance = 0;
 
 IconProvider::IconProvider()
 {
-#if defined(Q_WS_X11) && (QT_VERSION >= QT_VERSION_CHECK(4,6,0))
+#if defined(Q_WS_X11)
   m_useSystemTheme = Preferences().useSystemIconTheme();
 #endif
 }
@@ -57,7 +57,7 @@ void IconProvider::drop()
 
 QIcon IconProvider::getIcon(const QString &iconId)
 {
-#if defined(Q_WS_X11) && (QT_VERSION >= QT_VERSION_CHECK(4,6,0))
+#if defined(Q_WS_X11)
   if (m_useSystemTheme) {
     QIcon icon = QIcon::fromTheme(iconId, QIcon(":/Icons/oxygen/"+iconId+".png"));
     icon = generateDifferentSizes(icon);
@@ -67,7 +67,7 @@ QIcon IconProvider::getIcon(const QString &iconId)
   return QIcon(":/Icons/oxygen/"+iconId+".png");
 }
 
-#if defined(Q_WS_X11) && (QT_VERSION >= QT_VERSION_CHECK(4,6,0))
+#if defined(Q_WS_X11)
 void IconProvider::useSystemIconTheme(bool enable)
 {
   m_useSystemTheme = enable;
@@ -102,7 +102,7 @@ QIcon IconProvider::generateDifferentSizes(const QIcon &icon)
 
 QString IconProvider::getIconPath(const QString &iconId)
 {
-#if defined(Q_WS_X11) && (QT_VERSION >= QT_VERSION_CHECK(4,6,0))
+#if defined(Q_WS_X11)
   if (m_useSystemTheme) {
     QString path = QDir::temp().absoluteFilePath(iconId+".png");
     if (!QFile::exists(path)) {
diff --git a/src/iconprovider.h b/src/iconprovider.h
index eec415330..280cb46af 100644
--- a/src/iconprovider.h
+++ b/src/iconprovider.h
@@ -48,7 +48,7 @@ public:
   QIcon getIcon(const QString& iconId);
   QString getIconPath(const QString &iconId);
 
-#if defined(Q_WS_X11) && (QT_VERSION >= QT_VERSION_CHECK(4,6,0))
+#if defined(Q_WS_X11)
 public:
   void useSystemIconTheme(bool enable);
 
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 6037cbd4b..067c98c1d 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -1077,7 +1077,7 @@ void MainWindow::loadPreferences(bool configure_session) {
   properties->reloadPreferences();
 
   // Icon provider
-#if defined(Q_WS_X11) && (QT_VERSION >= QT_VERSION_CHECK(4,6,0))
+#if defined(Q_WS_X11)
   IconProvider::instance()->useSystemIconTheme(pref.useSystemIconTheme());
 #endif
 
diff --git a/src/preferences/advancedsettings.h b/src/preferences/advancedsettings.h
index 1fc54b9d5..496ab2764 100644
--- a/src/preferences/advancedsettings.h
+++ b/src/preferences/advancedsettings.h
@@ -17,7 +17,7 @@ enum AdvSettingsRows {DISK_CACHE, OUTGOING_PORT_MIN, OUTGOING_PORT_MAX, IGNORE_L
                     #if defined(Q_WS_WIN) || defined(Q_WS_MAC)
                       UPDATE_CHECK,
                     #endif
-                    #if defined(Q_WS_X11) && (QT_VERSION >= QT_VERSION_CHECK(4,6,0))
+                    #if defined(Q_WS_X11)
                       USE_ICON_THEME,
                     #endif
                       CONFIRM_DELETE_TORRENT, TRACKER_EXCHANGE,
@@ -36,7 +36,7 @@ private:
 #if defined(Q_WS_WIN) || defined(Q_WS_MAC)
   QCheckBox cb_update_check;
 #endif
-#if defined(Q_WS_X11) && (QT_VERSION >= QT_VERSION_CHECK(4,6,0))
+#if defined(Q_WS_X11)
   QCheckBox cb_use_icon_theme;
 #endif
   QCheckBox cb_announce_all_trackers;
@@ -105,7 +105,7 @@ public slots:
     pref.setUpdateCheckEnabled(cb_update_check.isChecked());
 #endif
     // Icon theme
-#if defined(Q_WS_X11) && (QT_VERSION >= QT_VERSION_CHECK(4,6,0))
+#if defined(Q_WS_X11)
     pref.useSystemIconTheme(cb_use_icon_theme.isChecked());
 #endif
     pref.setConfirmTorrentDeletion(cb_confirm_torrent_deletion.isChecked());
@@ -225,7 +225,7 @@ private slots:
     cb_update_check.setChecked(pref.isUpdateCheckEnabled());
     setRow(UPDATE_CHECK, tr("Check for software updates"), &cb_update_check);
 #endif
-#if defined(Q_WS_X11) && (QT_VERSION >= QT_VERSION_CHECK(4,6,0))
+#if defined(Q_WS_X11)
     cb_use_icon_theme.setChecked(pref.useSystemIconTheme());
     setRow(USE_ICON_THEME, tr("Use system icon theme"), &cb_use_icon_theme);
 #endif
diff --git a/src/preferences/options_imp.cpp b/src/preferences/options_imp.cpp
index 1bf55895d..fcddb8e1d 100644
--- a/src/preferences/options_imp.cpp
+++ b/src/preferences/options_imp.cpp
@@ -99,11 +99,7 @@ options_imp::options_imp(QWidget *parent):
 
   // Load week days (scheduler)
   for (uint i=1; i<=7; ++i) {
-#if QT_VERSION >= 0x040500
     schedule_days->addItem(QDate::longDayName(i, QDate::StandaloneFormat));
-#else
-    schedule_days->addItem(QDate::longDayName(i));
-#endif
   }
 
   // Load options
diff --git a/src/preferences/preferences.h b/src/preferences/preferences.h
index 5ee162026..8cbe7baae 100644
--- a/src/preferences/preferences.h
+++ b/src/preferences/preferences.h
@@ -1043,7 +1043,7 @@ public:
     setValue(QString::fromUtf8("Preferences/Advanced/AnnounceToAllTrackers"), enabled);
   }
 
-#if defined(Q_WS_X11) && (QT_VERSION >= QT_VERSION_CHECK(4,6,0))
+#if defined(Q_WS_X11)
   bool useSystemIconTheme() const {
     return value(QString::fromUtf8("Preferences/Advanced/useSystemIconTheme"), true).toBool();
   }
diff --git a/src/searchengine/searchengine.cpp b/src/searchengine/searchengine.cpp
index 5381168c2..39954a997 100644
--- a/src/searchengine/searchengine.cpp
+++ b/src/searchengine/searchengine.cpp
@@ -71,17 +71,8 @@ SearchEngine::SearchEngine(MainWindow *parent) : QWidget(parent), mp_mainWindow(
   // new qCompleter to the search pattern
   startSearchHistory();
   createCompleter();
-#if (QT_VERSION >= QT_VERSION_CHECK(4,5,0))
   tabWidget->setTabsClosable(true);
   connect(tabWidget, SIGNAL(tabCloseRequested(int)), this, SLOT(closeTab(int)));
-#else
-  // Add close tab button
-  closeTab_button = new QPushButton();
-  closeTab_button->setIcon(IconProvider::instance()->getIcon("tab-close"));
-  closeTab_button->setFlat(true);
-  tabWidget->setCornerWidget(closeTab_button);
-  connect(closeTab_button, SIGNAL(clicked()), this, SLOT(closeTab_button_clicked()));
-#endif
   // Boolean initialization
   search_stopped = false;
   // Creating Search Process
@@ -197,9 +188,6 @@ SearchEngine::~SearchEngine() {
     downloader->waitForFinished();
     delete downloader;
   }
-#if QT_VERSION < 0x040500
-  delete closeTab_button;
-#endif
   delete searchTimeout;
   delete searchProcess;
   delete supported_engines;
@@ -339,9 +327,6 @@ void SearchEngine::on_search_button_clicked() {
   tabName.replace(QRegExp("&{1}"), "&&");
   tabWidget->addTab(currentSearchTab, tabName);
   tabWidget->setCurrentWidget(currentSearchTab);
-#if QT_VERSION < 0x040500
-  closeTab_button->setEnabled(true);
-#endif
   // if the pattern is not in the pattern
   QStringList wordList = searchHistory.stringList();
   if (wordList.indexOf(pattern) == -1) {
@@ -665,7 +650,6 @@ void SearchEngine::appendSearchResult(const QString &line) {
   goToDescBtn->setEnabled(true);
 }
 
-#if QT_VERSION >= 0x040500
 void SearchEngine::closeTab(int index) {
   if (index == tabWidget->indexOf(currentSearchTab)) {
     qDebug("Deleted current search Tab");
@@ -684,31 +668,6 @@ void SearchEngine::closeTab(int index) {
     goToDescBtn->setEnabled(false);
   }
 }
-#else
-// Clear search results list
-void SearchEngine::closeTab_button_clicked() {
-  if (all_tab.size()) {
-    qDebug("currentTab rank: %d", tabWidget->currentIndex());
-    qDebug("currentSearchTab rank: %d", tabWidget->indexOf(currentSearchTab));
-    if (tabWidget->currentIndex() == tabWidget->indexOf(currentSearchTab)) {
-      qDebug("Deleted current search Tab");
-      if (searchProcess->state() != QProcess::NotRunning) {
-        searchProcess->terminate();
-      }
-      if (searchTimeout->isActive()) {
-        searchTimeout->stop();
-      }
-      search_stopped = true;
-      currentSearchTab = 0;
-    }
-    delete all_tab.takeAt(tabWidget->currentIndex());
-    if (!all_tab.size()) {
-      closeTab_button->setEnabled(false);
-      download_button->setEnabled(false);
-    }
-  }
-}
-#endif
 
 // Download selected items in search results list
 void SearchEngine::on_download_button_clicked() {
diff --git a/src/searchengine/searchengine.h b/src/searchengine/searchengine.h
index ef92427b3..2545eec56 100644
--- a/src/searchengine/searchengine.h
+++ b/src/searchengine/searchengine.h
@@ -94,11 +94,7 @@ protected slots:
   // Search slots
   void tab_changed(int);//to prevent the use of the download button when the tab is empty
   void on_search_button_clicked();
-#if QT_VERSION < 0x040500
-  void closeTab_button_clicked();
-#else
   void closeTab(int index);
-#endif
   void appendSearchResult(const QString &line);
   void searchFinished(int exitcode,QProcess::ExitStatus);
   void readSearchOutput();
@@ -137,9 +133,6 @@ private:
   SupportedEngines *supported_engines;
   QTimer *searchTimeout;
   QPointer<SearchTab> currentSearchTab;
-#if QT_VERSION < 0x040500
-  QPushButton *closeTab_button;
-#endif
   QList<QPointer<SearchTab> > all_tab; // To store all tabs
   const SearchCategories full_cat_names;
   MainWindow *mp_mainWindow;