diff --git a/boot/boot.js b/boot/boot.js
index 9d838a0d6..02307f600 100644
--- a/boot/boot.js
+++ b/boot/boot.js
@@ -1244,10 +1244,14 @@ Decrypt any tiddlers stored within the element with the ID "encryptedArea". The
 $tw.boot.decryptEncryptedTiddlers = function(callback) {
 	var encryptedArea = document.getElementById("encryptedStoreArea");
 	if(encryptedArea) {
-		var encryptedText = encryptedArea.innerHTML;
+		var encryptedText = encryptedArea.innerHTML,
+			prompt = "Enter a password to decrypt this TiddlyWiki";
 		// Prompt for the password
+		if($tw.utils.hop($tw.boot,"encryptionPrompts")) {
+			prompt = $tw.boot.encryptionPrompts.decrypt;
+		}
 		$tw.passwordPrompt.createPrompt({
-			serviceName: "Enter a password to decrypt this TiddlyWiki",
+			serviceName: prompt,
 			noUserName: true,
 			submitText: "Decrypt",
 			callback: function(data) {
diff --git a/editions/dev/tiddlers/from tw5.com/How to customise the password prompt.tid b/editions/dev/tiddlers/from tw5.com/How to customise the password prompt.tid
new file mode 100644
index 000000000..53eb35433
--- /dev/null
+++ b/editions/dev/tiddlers/from tw5.com/How to customise the password prompt.tid	
@@ -0,0 +1,15 @@
+title: How to customise the password prompt
+tags: howto
+created: 20141006085526118
+modified: 20141006085526118
+
+You can customise the text and appearance of the password prompt that is displayed when encrypted TiddlyWiki files are first opened.
+
+To do so, create a tiddler tagged {{$:/core/wiki/rawmarkup|$:/core/ui/TagTemplate}} containing:
+
+# A JavaScript `<script>` tag containing code to override the configuration variable `$tw.boot.encryptionPrompts.decrypt`
+# CSS `<style>` definitions targeting the `tc-password-wrapper` class to apply styles to the form
+
+Raw markup tiddlers are spliced into the top of the standalone HTML file, and are executed before the boot prefix and boot kernel.
+
+See $:/PathEncryptionPrompt for an example.
diff --git a/editions/dev/tiddlers/system/PatchEncryptionPrompt.tid b/editions/dev/tiddlers/system/PatchEncryptionPrompt.tid
new file mode 100644
index 000000000..d9fb28344
--- /dev/null
+++ b/editions/dev/tiddlers/system/PatchEncryptionPrompt.tid
@@ -0,0 +1,33 @@
+title: $:/PatchEncryptionPrompt
+tags: $:/core/wiki/rawmarkup
+
+<script>
+
+window.$tw = window.$tw || Object.create(null);
+$tw.boot = $tw.boot || Object.create(null);
+
+$tw.boot.encryptionPrompts = {
+	decrypt: "Decrypt this TiddlyWiki by entering the password"
+};
+
+</script>
+<style>
+
+body .tc-password-wrapper {
+	background-color: rgb(183, 197, 235);
+	border: 8px solid rgb(152, 164, 197);
+}
+
+body .tc-password-wrapper form {
+	text-align: center;
+}
+
+body .tc-password-wrapper h1 {
+	padding-bottom: 8px;
+}
+
+body .tc-password-wrapper input {
+	width: auto;
+}
+
+</style>