diff --git a/src/libs/utils/dropsupport.cpp b/src/libs/utils/dropsupport.cpp
index 95d3678719f..7416edf9c37 100644
--- a/src/libs/utils/dropsupport.cpp
+++ b/src/libs/utils/dropsupport.cpp
@@ -86,11 +86,10 @@ bool DropSupport::eventFilter(QObject *obj, QEvent *event)
         auto dee = static_cast<QDragEnterEvent *>(event);
         if ((isFileDrop(dee) || isValueDrop(dee)) && (!m_filterFunction || m_filterFunction(dee, this))) {
             event->accept();
-            return true;
+        } else {
+            event->ignore();
         }
-        //        event->ignore();
-        return false;
-
+        return true;
     } else if (event->type() == QEvent::DragMove) {
         event->accept();
         return true;
diff --git a/src/plugins/coreplugin/editormanager/editorview.cpp b/src/plugins/coreplugin/editormanager/editorview.cpp
index 0229116ff85..9edef863c9a 100644
--- a/src/plugins/coreplugin/editormanager/editorview.cpp
+++ b/src/plugins/coreplugin/editormanager/editorview.cpp
@@ -113,7 +113,7 @@ EditorView::EditorView(SplitterOrView *parentSplitterOrView, QWidget *parent) :
     m_container->addWidget(empty);
     m_widgetEditorMap.insert(empty, nullptr);
 
-    /*const auto dropSupport = new DropSupport(this, [this](QDropEvent *event, DropSupport *) {
+    const auto dropSupport = new DropSupport(this, [this](QDropEvent *event, DropSupport *) {
         // do not accept move events except from other editor views (i.e. their tool bars)
         // otherwise e.g. item views that support moving items within themselves would
         // also "move" the item into the editor view, i.e. the item would be removed from the
@@ -126,7 +126,7 @@ EditorView::EditorView(SplitterOrView *parentSplitterOrView, QWidget *parent) :
     });
     connect(dropSupport, &DropSupport::filesDropped,
             this, &EditorView::openDroppedFiles);
-*/
+
     updateNavigatorActions();
 }
 
diff --git a/src/plugins/coreplugin/mainwindow.cpp b/src/plugins/coreplugin/mainwindow.cpp
index f31fcbf99be..47d66c32b46 100644
--- a/src/plugins/coreplugin/mainwindow.cpp
+++ b/src/plugins/coreplugin/mainwindow.cpp
@@ -194,12 +194,12 @@ MainWindow::MainWindow()
 
     statusBar()->setProperty("p_styled", true);
 
-    /*auto dropSupport = new DropSupport(this, [](QDropEvent *event, DropSupport *) {
+    auto dropSupport = new DropSupport(this, [](QDropEvent *event, DropSupport *) {
         return event->source() == nullptr; // only accept drops from the "outside" (e.g. file manager)
     });
     connect(dropSupport, &DropSupport::filesDropped,
             this, &MainWindow::openDroppedFiles);
-*/
+
     if (HostOsInfo::isLinuxHost()) {
         m_trimTimer.setSingleShot(true);
         m_trimTimer.setInterval(60000);