diff --git a/plugins/vestige/vestige.cpp b/plugins/vestige/vestige.cpp
index 7ae8dbcdd..8f41b36c9 100644
--- a/plugins/vestige/vestige.cpp
+++ b/plugins/vestige/vestige.cpp
@@ -882,8 +882,9 @@ manageVestigeInstrumentView::manageVestigeInstrumentView( Instrument * _instrume
 
 	m_vi->m_subWindow = engine::mainWindow()->workspace()->addSubWindow(new QMdiSubWindow, Qt::SubWindow |
 			Qt::CustomizeWindowHint | Qt::WindowTitleHint | Qt::WindowSystemMenuHint);
-	m_vi->m_subWindow->setSizePolicy( QSizePolicy::Fixed, QSizePolicy::Fixed );
-	m_vi->m_subWindow->setFixedSize( 960, 300);
+	m_vi->m_subWindow->setSizePolicy( QSizePolicy::Fixed, QSizePolicy::MinimumExpanding );
+	m_vi->m_subWindow->setFixedWidth( 960 );
+	m_vi->m_subWindow->setMinimumHeight( 300 );
 	m_vi->m_subWindow->setWidget(m_vi->m_scrollArea);
 	m_vi->m_subWindow->setWindowTitle( m_vi->instrumentTrack()->name()
 								+ tr( " - VST plugin control" ) );