diff --git a/org.eclipse.example.calc/src/org/eclipse/example/calc/internal/ui/swt/CalculatorUI.java b/org.eclipse.example.calc/src/org/eclipse/example/calc/internal/ui/swt/CalculatorUI.java
index 2961499..c943519 100644
--- a/org.eclipse.example.calc/src/org/eclipse/example/calc/internal/ui/swt/CalculatorUI.java
+++ b/org.eclipse.example.calc/src/org/eclipse/example/calc/internal/ui/swt/CalculatorUI.java
@@ -82,6 +82,8 @@
 		display = new Text(shell, SWT.BORDER_SOLID | SWT.RIGHT);
 		display.setLayoutData(gridData);
 		display.setText("0");
+		display.setEditable(false);
+		display.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 		calculator.setClearText(true);
 	}