diff --git a/forge-gui-desktop/src/main/java/forge/deckchooser/FDeckViewer.java b/forge-gui-desktop/src/main/java/forge/deckchooser/FDeckViewer.java
index aee20e3f376..574f6c244a9 100644
--- a/forge-gui-desktop/src/main/java/forge/deckchooser/FDeckViewer.java
+++ b/forge-gui-desktop/src/main/java/forge/deckchooser/FDeckViewer.java
@@ -118,8 +118,9 @@ public class FDeckViewer extends FDialog {
             }
         });
 
-        final int width = 800;
-        final int height = 600;
+        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
+        final int width = (int)(screenSize.width * 0.8);
+        final int height = (int)(screenSize.height * 0.9);
         this.setPreferredSize(new Dimension(width, height));
         this.setSize(width, height);