diff --git a/src/gui/LineEdit.cpp b/src/gui/LineEdit.cpp
index 89b420471..aad08e0bd 100644
--- a/src/gui/LineEdit.cpp
+++ b/src/gui/LineEdit.cpp
@@ -46,7 +46,7 @@ LineEdit::LineEdit(QWidget* parent)
     m_clearButton->setStyleSheet("QToolButton { border: none; padding: 0px; }");
     m_clearButton->hide();
     connect(m_clearButton, SIGNAL(clicked()), this, SLOT(clear()));
-    connect(this, SIGNAL(textChanged(const QString&)), this, SLOT(updateCloseButton(const QString&)));
+    connect(this, SIGNAL(textChanged(QString)), this, SLOT(updateCloseButton(QString)));
     int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
     setStyleSheet(QString("QLineEdit { padding-right: %1px; } ")
                   .arg(m_clearButton->sizeHint().width() + frameWidth + 1));
diff --git a/src/gui/entry/EditEntryWidget.cpp b/src/gui/entry/EditEntryWidget.cpp
index b65b2ce1d..bc96ed62d 100644
--- a/src/gui/entry/EditEntryWidget.cpp
+++ b/src/gui/entry/EditEntryWidget.cpp
@@ -101,11 +101,11 @@ EditEntryWidget::EditEntryWidget(QWidget* parent)
     m_historyUi->historyView->setModel(m_sortModel);
     m_historyUi->historyView->setRootIsDecorated(false);
 
-    connect(m_historyUi->historyView, SIGNAL(activated(const QModelIndex&)),
-            SLOT(histEntryActivated(const QModelIndex&)));
+    connect(m_historyUi->historyView, SIGNAL(activated(QModelIndex)),
+            SLOT(histEntryActivated(QModelIndex)));
     connect(m_historyUi->historyView->selectionModel(),
-            SIGNAL(currentChanged(QModelIndex ,QModelIndex)),
-            SLOT(updateHistoryButtons(QModelIndex, QModelIndex)));
+            SIGNAL(currentChanged(QModelIndex,QModelIndex)),
+            SLOT(updateHistoryButtons(QModelIndex,QModelIndex)));
     connect(m_historyUi->showButton, SIGNAL(clicked()), SLOT(showHistoryEntry()));
     connect(m_historyUi->restoreButton, SIGNAL(clicked()), SLOT(restoreHistoryEntry()));
     connect(m_historyUi->deleteButton, SIGNAL(clicked()), SLOT(deleteHistoryEntry()));
diff --git a/tests/TestEntryModel.cpp b/tests/TestEntryModel.cpp
index 519bfbd88..c860c97b5 100644
--- a/tests/TestEntryModel.cpp
+++ b/tests/TestEntryModel.cpp
@@ -58,7 +58,7 @@ void TestEntryModel::test()
 
     QCOMPARE(model->rowCount(), 2);
 
-    QSignalSpy spyDataChanged(model, SIGNAL(dataChanged(const QModelIndex&, const QModelIndex&)));
+    QSignalSpy spyDataChanged(model, SIGNAL(dataChanged(QModelIndex,QModelIndex)));
     entry1->setTitle("changed");
     QCOMPARE(spyDataChanged.count(), 1);
 
@@ -68,10 +68,10 @@ void TestEntryModel::test()
     QCOMPARE(model->data(index1).toString(), entry1->title());
     QCOMPARE(model->data(index2).toString(), entry2->title());
 
-    QSignalSpy spyAboutToAdd(model, SIGNAL(rowsAboutToBeInserted(const QModelIndex&,int,int)));
-    QSignalSpy spyAdded(model, SIGNAL(rowsInserted(const QModelIndex&,int,int)));
-    QSignalSpy spyAboutToRemove(model, SIGNAL(rowsAboutToBeRemoved(const QModelIndex&,int,int)));
-    QSignalSpy spyRemoved(model, SIGNAL(rowsRemoved(const QModelIndex&,int,int)));
+    QSignalSpy spyAboutToAdd(model, SIGNAL(rowsAboutToBeInserted(QModelIndex,int,int)));
+    QSignalSpy spyAdded(model, SIGNAL(rowsInserted(QModelIndex,int,int)));
+    QSignalSpy spyAboutToRemove(model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)));
+    QSignalSpy spyRemoved(model, SIGNAL(rowsRemoved(QModelIndex,int,int)));
 
     Entry* entry3 = new Entry();
     entry3->setGroup(group1);