diff --git a/src/main/java/org/warp/picalculator/gui/graphicengine/cpu/SwingWindow.java b/src/main/java/org/warp/picalculator/gui/graphicengine/cpu/SwingWindow.java
index c03ccd42..25607384 100755
--- a/src/main/java/org/warp/picalculator/gui/graphicengine/cpu/SwingWindow.java
+++ b/src/main/java/org/warp/picalculator/gui/graphicengine/cpu/SwingWindow.java
@@ -209,7 +209,9 @@ public class SwingWindow extends JFrame {
 
 	@Override
 	public void setSize(int width, int height) {
-		c.setSize(width*mult, height*mult);
+		c.setSize(new Dimension(width*mult, height*mult));
+		c.setPreferredSize(new Dimension(width*mult, height*mult));
+		super.getContentPane().setSize(new Dimension(width*mult, height*mult));
 		super.getContentPane().setPreferredSize(new Dimension(width*mult, height*mult));
 		super.pack();
 	}