diff --git a/ui.js b/ui.js
index 9b952de..734d2e5 100644
--- a/ui.js
+++ b/ui.js
@@ -137,7 +137,7 @@ exports.getSelectedRadioValue = getSelectedRadioValue;
 
 /* Initialise device information displays */
 
-exports.initialiseDisplay = function () {
+function initialiseDisplay() {
 
     idDisplay.value = "0000000000000000";
 
@@ -147,6 +147,8 @@ exports.initialiseDisplay = function () {
 
 };
 
+exports.initialiseDisplay = initialiseDisplay;
+
 /* Disable/enable device information display */
 
 exports.disableDisplay = function () {
@@ -163,6 +165,8 @@ exports.disableDisplay = function () {
 
     configureButton.disabled = true;
 
+    initialiseDisplay();
+
 };
 
 exports.enableDisplayAndShowTime = function (date) {