diff --git a/src/guimessagedialog.cpp b/src/guimessagedialog.cpp
index 7913e3f..9619ca5 100644
--- a/src/guimessagedialog.cpp
+++ b/src/guimessagedialog.cpp
@@ -101,3 +101,7 @@ void GUIMessageDialog::hideExitButton() {
     ui->btn_main->setVisible(false);
     disconnect(ui->btn_main,0,0,0);
 }
+
+void GUIMessageDialog::setOpacity(double opacity) {
+    this->setWindowOpacity(opacity);
+}
diff --git a/src/guimessagedialog.h b/src/guimessagedialog.h
index 3c57168..edbd636 100644
--- a/src/guimessagedialog.h
+++ b/src/guimessagedialog.h
@@ -20,6 +20,7 @@ public:
     void hideExitButton();
     void startLoading();
     void stopLoading();
+    void setOpacity(double);
 protected:
     void timerEvent(QTimerEvent* event) override ;
 private: