diff --git a/winghexasm.cpp b/winghexasm.cpp
index 8549745..37f60b8 100644
--- a/winghexasm.cpp
+++ b/winghexasm.cpp
@@ -180,19 +180,19 @@ QMenu *WingHexAsm::registerMenu() { return menu; }
 QToolButton *WingHexAsm::registerToolButton() { return tbtn; }
 
 void WingHexAsm::registerDockWidget(
-    QMap<QDockWidget *, Qt::DockWidgetArea> &rdw) {
+    QHash<QDockWidget *, Qt::DockWidgetArea> &rdw) {
   rdw.insert(dw, Qt::DockWidgetArea::BottomDockWidgetArea);
 }
 
-QString WingHexAsm::pluginName() { return tr("WingHexAsm"); }
+const QString WingHexAsm::pluginName() { return tr("WingHexAsm"); }
 
-QString WingHexAsm::pluginAuthor() { return WINGSUMMER; }
+const QString WingHexAsm::pluginAuthor() { return WINGSUMMER; }
 
 uint WingHexAsm::pluginVersion() { return 1; }
 
-QString WingHexAsm::signature() { return WINGSUMMER; }
+const QString WingHexAsm::signature() { return WINGSUMMER; }
 
-QString WingHexAsm::pluginComment() {
+const QString WingHexAsm::pluginComment() {
   return tr("A small assembly plugin for WingHexExplorer.");
 }
 
diff --git a/winghexasm.h b/winghexasm.h
index 50fc280..9b02cb5 100644
--- a/winghexasm.h
+++ b/winghexasm.h
@@ -24,12 +24,12 @@ public:
   QMenu *registerMenu() override;
   QToolButton *registerToolButton() override;
   void
-  registerDockWidget(QMap<QDockWidget *, Qt::DockWidgetArea> &rdw) override;
-  QString pluginName() override;
-  QString pluginAuthor() override;
+  registerDockWidget(QHash<QDockWidget *, Qt::DockWidgetArea> &rdw) override;
+  const QString pluginName() override;
+  const QString pluginAuthor() override;
   uint pluginVersion() override;
-  QString signature() override;
-  QString pluginComment() override;
+  const QString signature() override;
+  const QString pluginComment() override;
   void plugin2MessagePipe(WingPluginMessage type, QList<QVariant> msg) override;
 
 private: