Trying something

forms/settings-dialog.cpp

@@ -27,7 +27,7 @@ with this program. If not, see <https://www.gnu.org/licenses/>
 #define CHANGE_ME "changeme"
 
 SettingsDialog::SettingsDialog(QWidget *parent) :
-    QDialog(parent),
+    QDialog(parent, Qt::Dialog),
     ui(new Ui::SettingsDialog)
 {
     ui->setupUi(this);