diff --git a/src/com/jovial/jrpn/GButton.java b/src/com/jovial/jrpn/GButton.java
index f8cd7aa..480323e 100644
--- a/src/com/jovial/jrpn/GButton.java
+++ b/src/com/jovial/jrpn/GButton.java
@@ -174,11 +174,17 @@ protected void drawWhiteLabel(Graphics2D g, int offsetX, int offsetY) {
     // joins the sqrt symbol.
     public static class Sqrt extends GButton {
         int sqrtWidth;
+        int overlineWidth;
+        int xWidth;
         int blueHeight;
+        private final static String overline = "\u203E\u203E";
         @Override
         public void alignText() {
             super.alignText();
-            sqrtWidth = scaleInfo.blueFontMetrics.stringWidth("\u221A");  // √
+            FontMetrics fm = scaleInfo.blueFontMetrics;
+            sqrtWidth = fm.stringWidth("\u221A");  // √
+            overlineWidth = fm.stringWidth(overline);
+            xWidth = fm.stringWidth("x");
             blueHeight = scaleInfo.blueFontMetrics.getAscent();
         }
 
@@ -202,9 +208,11 @@ protected void drawBlueLabel(Graphics2D g, int offsetX, int offsetY) {
                 shiftLeft = 1;
             }
             // TODO:  Make the shiftLeft factor and minimum be items that can be configured.
-            y -= shiftUp;
             x += sqrtWidth - shiftLeft;
-            g.drawString("x\u0305", x, y);
+            y -= shiftUp;
+            g.drawString("x", x + (overlineWidth - xWidth)/2, y);
+            g.drawString("\u203E\u203E", x, y);
+            // I saw an issue on OSX with combining overline (\u0305)
         }
     }
 }
diff --git a/src/com/jovial/jrpn/fmMain.java b/src/com/jovial/jrpn/fmMain.java
index 24f87bc..69211a7 100644
--- a/src/com/jovial/jrpn/fmMain.java
+++ b/src/com/jovial/jrpn/fmMain.java
@@ -318,10 +318,11 @@ private void initComponents() throws InterruptedException {
         jSeparator7 = new javax.swing.JPopupMenu.Separator();
         mHelpAbout = new javax.swing.JMenuItem();
 
-        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
+        setDefaultCloseOperation(javax.swing.WindowConstants.DO_NOTHING_ON_CLOSE);
         addWindowListener(new java.awt.event.WindowAdapter() {
             public void windowClosing(java.awt.event.WindowEvent evt) {
                 formWindowClosing(evt);
+                System.exit(0);
             }
         });
         addComponentListener(new java.awt.event.ComponentAdapter() {