diff --git a/src/calamares/CalamaresWindow.cpp b/src/calamares/CalamaresWindow.cpp
index 0452e5139..bfdc4111b 100644
--- a/src/calamares/CalamaresWindow.cpp
+++ b/src/calamares/CalamaresWindow.cpp
@@ -31,6 +31,7 @@ CalamaresWindow::CalamaresWindow( QWidget* parent )
 {
     // Hide close button
     setWindowFlags( Qt::Window | Qt::WindowTitleHint | Qt::CustomizeWindowHint );
+    setMinimumSize( 800, 600 );
 
     QBoxLayout* mainLayout = new QHBoxLayout;
     setLayout( mainLayout );