diff --git a/src/plugins/diffeditor/diffeditorplugin.cpp b/src/plugins/diffeditor/diffeditorplugin.cpp
index 71c3b2a024f..4412514e0c2 100644
--- a/src/plugins/diffeditor/diffeditorplugin.cpp
+++ b/src/plugins/diffeditor/diffeditorplugin.cpp
@@ -41,6 +41,7 @@
 #include <coreplugin/actionmanager/actionmanager.h>
 #include <coreplugin/coreconstants.h>
 #include <coreplugin/editormanager/editormanager.h>
+#include <coreplugin/icore.h>
 
 namespace DiffEditor {
 namespace Internal {
@@ -82,13 +83,13 @@ void DiffEditorPlugin::extensionsInitialized()
 
 void DiffEditorPlugin::diff()
 {
-    QString fileName1 = QFileDialog::getOpenFileName(0,
+    QString fileName1 = QFileDialog::getOpenFileName(Core::ICore::dialogParent(),
                                                      tr("Select First File for Diff"),
                                                      QString());
     if (fileName1.isNull())
         return;
 
-    QString fileName2 = QFileDialog::getOpenFileName(0,
+    QString fileName2 = QFileDialog::getOpenFileName(Core::ICore::dialogParent(),
                                                      tr("Select Second File for Diff"),
                                                      QString());
     if (fileName2.isNull())
diff --git a/src/plugins/fakevim/fakevimplugin.cpp b/src/plugins/fakevim/fakevimplugin.cpp
index 1cf0e8f0197..f79f0c86ac2 100644
--- a/src/plugins/fakevim/fakevimplugin.cpp
+++ b/src/plugins/fakevim/fakevimplugin.cpp
@@ -529,7 +529,7 @@ void FakeVimOptionPage::setPlainStyle()
 
 void FakeVimOptionPage::openVimRc()
 {
-    const QString fileName = QFileDialog::getOpenFileName();
+    const QString fileName = QFileDialog::getOpenFileName(Core::ICore::dialogParent());
     if (!fileName.isNull())
         m_ui.lineEditVimRcPath->setText(fileName);
 }
diff --git a/src/plugins/help/generalsettingspage.cpp b/src/plugins/help/generalsettingspage.cpp
index e687ed0cc06..f6b80c757f6 100644
--- a/src/plugins/help/generalsettingspage.cpp
+++ b/src/plugins/help/generalsettingspage.cpp
@@ -216,8 +216,8 @@ void GeneralSettingsPage::importBookmarks()
 {
     m_ui->errorLabel->setVisible(false);
 
-    QString fileName = QFileDialog::getOpenFileName(0, tr("Import Bookmarks"),
-        QDir::currentPath(), tr("Files (*.xbel)"));
+    QString fileName = QFileDialog::getOpenFileName(Core::ICore::dialogParent(),
+        tr("Import Bookmarks"), QDir::currentPath(), tr("Files (*.xbel)"));
 
     if (fileName.isEmpty())
         return;
@@ -238,8 +238,8 @@ void GeneralSettingsPage::exportBookmarks()
 {
     m_ui->errorLabel->setVisible(false);
 
-    QString fileName = QFileDialog::getSaveFileName(0, tr("Save File"),
-        QLatin1String("untitled.xbel"), tr("Files (*.xbel)"));
+    QString fileName = QFileDialog::getSaveFileName(Core::ICore::dialogParent(),
+        tr("Save File"), QLatin1String("untitled.xbel"), tr("Files (*.xbel)"));
 
     QLatin1String suffix(".xbel");
     if (!fileName.endsWith(suffix))
diff --git a/src/plugins/projectexplorer/projectexplorer.cpp b/src/plugins/projectexplorer/projectexplorer.cpp
index 9c48e3eca00..1ef525d6797 100644
--- a/src/plugins/projectexplorer/projectexplorer.cpp
+++ b/src/plugins/projectexplorer/projectexplorer.cpp
@@ -1038,8 +1038,8 @@ void ProjectExplorerPlugin::loadAction()
         dir = isProject ? fn : QFileInfo(fn).absolutePath();
     }
 
-    QString filename = QFileDialog::getOpenFileName(0, tr("Load Project"),
-                                                    dir,
+    QString filename = QFileDialog::getOpenFileName(Core::ICore::dialogParent(),
+                                                    tr("Load Project"), dir,
                                                     d->m_projectFilterString);
     if (filename.isEmpty())
         return;