diff --git a/src/display/canvas.cc b/src/display/canvas.cc
index bc1ea9af..498d493d 100644
--- a/src/display/canvas.cc
+++ b/src/display/canvas.cc
@@ -6,8 +6,8 @@ namespace display {
 
 void
 Canvas::resize(int x, int y, int w, int h) {
-  delwin(m_window);
-  m_window = newwin(h, w, y, x);
+  wresize(m_window, h, w);
+  mvwin(m_window, y, x);
 }
 
 void
diff --git a/src/display/canvas.h b/src/display/canvas.h
index fa745dec..08f82114 100644
--- a/src/display/canvas.h
+++ b/src/display/canvas.h
@@ -66,6 +66,9 @@ public:
 		  A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6)    { mvwprintw(m_window, y, x, str, a1, a2, a3, a4, a5, a6); }
 
 private:
+  Canvas(const Canvas&);
+  void operator = (const Canvas&);
+
   WINDOW*   m_window;
 };
 
diff --git a/src/display/manager.cc b/src/display/manager.cc
index 72ca6ec9..377fa462 100644
--- a/src/display/manager.cc
+++ b/src/display/manager.cc
@@ -65,6 +65,8 @@ Manager::adjust_layout() {
 
 void
 Manager::do_update() {
+  wnoutrefresh(stdscr);
+
   std::for_each(begin(), end(), std::mem_fun(&Window::redraw));
   std::for_each(begin(), end(), std::mem_fun(&Window::refresh));
 
diff --git a/src/display/window.cc b/src/display/window.cc
index e917e5b2..a34536a5 100644
--- a/src/display/window.cc
+++ b/src/display/window.cc
@@ -7,6 +7,10 @@
 
 namespace display {
 
+Window::~Window() {
+  delete m_canvas;
+}
+
 void
 Window::refresh() {
   m_canvas->refresh();
diff --git a/src/display/window.h b/src/display/window.h
index aad3ef9c..f7a240dc 100644
--- a/src/display/window.h
+++ b/src/display/window.h
@@ -11,7 +11,8 @@ class Window {
 public:
   Window(Canvas* c = NULL, bool d = false, int h = 1) :
     m_canvas(c), m_dynamic(d), m_minHeight(h) {}
-  virtual ~Window() {}
+
+  virtual ~Window();
 
   bool         is_dynamic()     { return m_dynamic; }
   bool         is_dirty()       { return m_lastDraw == 0; }
diff --git a/src/ui/download.h b/src/ui/download.h
index 3c203564..b8ec6fa6 100644
--- a/src/ui/download.h
+++ b/src/ui/download.h
@@ -36,6 +36,9 @@ public:
   void             disable();
 
 private:
+  Download(const Download&);
+  void operator = (const Download&);
+
   void             receive_next();
   void             receive_prev();
 
diff --git a/src/ui/download_list.h b/src/ui/download_list.h
index 4df19f4e..c2003405 100644
--- a/src/ui/download_list.h
+++ b/src/ui/download_list.h
@@ -30,6 +30,9 @@ public:
   void             disable();
 
 private:
+  DownloadList(const DownloadList&);
+  void operator = (const DownloadList&);
+
   void             receive_next();
   void             receive_prev();