diff --git a/paletteeditor/colorbutton.cpp b/paletteeditor/colorbutton.cpp
index a9ec418..a91999d 100644
--- a/paletteeditor/colorbutton.cpp
+++ b/paletteeditor/colorbutton.cpp
@@ -169,14 +169,14 @@ void ColorButton::mouseMoveEvent(QMouseEvent *event)
 {
 #ifndef QT_NO_DRAGANDDROP
     if (event->buttons() & Qt::LeftButton && (d_ptr->m_dragStart - event->pos()).manhattanLength() > QApplication::startDragDistance()) {
-        QMimeData *mime = new QMimeData;
+        auto *const mime = new QMimeData;
         mime->setColorData(color());
-        QDrag *drg = new QDrag(this);
+        auto *const drg = new QDrag(this);
         drg->setMimeData(mime);
         drg->setPixmap(d_ptr->generatePixmap());
         setDown(false);
         event->accept();
-        drg->start();
+        drg->exec(Qt::CopyAction);
         return;
     }
 #endif
diff --git a/paletteeditor/paletteeditor.cpp b/paletteeditor/paletteeditor.cpp
index 52bc050..4db1775 100644
--- a/paletteeditor/paletteeditor.cpp
+++ b/paletteeditor/paletteeditor.cpp
@@ -366,8 +366,8 @@ BrushEditor::BrushEditor(QWidget *parent)
     , m_button(new ColorButton(this))
     , m_changed(false)
 {
-    QLayout *layout = new QHBoxLayout(this);
-    layout->setMargin(0);
+    auto *const layout = new QHBoxLayout(this);
+    layout->setContentsMargins(0, 0, 0, 0);
     layout->addWidget(m_button);
     connect(m_button, &ColorButton::colorChanged, this, &BrushEditor::brushChanged);
     setFocusProxy(m_button);
@@ -401,7 +401,7 @@ RoleEditor::RoleEditor(QWidget *parent)
     , m_edited(false)
 {
     QHBoxLayout *layout = new QHBoxLayout(this);
-    layout->setMargin(0);
+    layout->setContentsMargins(0, 0, 0, 0);
     layout->setSpacing(0);
 
     layout->addWidget(m_label);
diff --git a/widgets/pathselection.cpp b/widgets/pathselection.cpp
index 93e0e51..ff2b1df 100644
--- a/widgets/pathselection.cpp
+++ b/widgets/pathselection.cpp
@@ -57,7 +57,7 @@ PathSelection::PathSelection(QWidget *parent)
 
     auto *layout = new QHBoxLayout(this);
     layout->setSpacing(3);
-    layout->setMargin(0);
+    layout->setContentsMargins(0, 0, 0, 0);
     layout->addWidget(m_lineEdit);
     layout->addWidget(m_button);
     setLayout(layout);