diff --git a/modules/jsdoc/tag/dictionary/definitions.js b/modules/jsdoc/tag/dictionary/definitions.js
index 226a4495..ecc1ee73 100644
--- a/modules/jsdoc/tag/dictionary/definitions.js
+++ b/modules/jsdoc/tag/dictionary/definitions.js
@@ -9,7 +9,7 @@
     exports.defineTags = function(dictionary) {
         
         dictionary.defineTag('access', {
-            musHaveValue: true,
+            mustHaveValue: true,
             onTagged: function(doclet, tag) {
                 if ( /^(private|protected)$/.test(tag.value) ) {
                     doclet.access = tag.value;
@@ -23,7 +23,7 @@
         });
         
         dictionary.defineTag('author', {
-            musHaveValue: true,
+            mustHaveValue: true,
             onTagged: function(doclet, tag) {
                 doclet.author = tag.value;
                 
@@ -75,7 +75,7 @@
         .synonym('const');
         
         dictionary.defineTag('copyright', {
-            musHaveValue: true,
+            mustHaveValue: true,
             onTagged: function(doclet, tag) {
                 doclet.copyright = tag.value;
                 
@@ -319,6 +319,16 @@
             }
         });
         
+        // use this instead of old deprecated @final tag
+        dictionary.defineTag('readonly', {
+            mustNotHaveValue: true,
+            onTagged: function(doclet, tag) {
+                doclet.readonly = true;
+                
+                return false;
+            }
+        });
+        
         dictionary.defineTag('requires', {
             mustHaveValue: true,
             onTagged: function(doclet, tag) {
diff --git a/test/cases/readonlytag.js b/test/cases/readonlytag.js
new file mode 100644
index 00000000..30e826ce
--- /dev/null
+++ b/test/cases/readonlytag.js
@@ -0,0 +1,10 @@
+/**
+* @constructor
+*/
+function Collection() {
+
+    /** @readonly */
+    this.length = 0;
+}
+
+
diff --git a/test/runner.js b/test/runner.js
index 70460019..4fc27cbf 100644
--- a/test/runner.js
+++ b/test/runner.js
@@ -99,6 +99,7 @@ testFile('test/t/cases/globaltag.js');
 testFile('test/t/cases/ignoretag.js');
 testFile('test/t/cases/paramtag.js');
 testFile('test/t/cases/privatetag.js');
+testFile('test/t/cases/readonlytag.js');
 testFile('test/t/cases/requirestag.js');
 testFile('test/t/cases/returnstag.js');
 testFile('test/t/cases/seetag.js');
diff --git a/test/t/cases/readonlytag.js b/test/t/cases/readonlytag.js
new file mode 100644
index 00000000..f295ed35
--- /dev/null
+++ b/test/t/cases/readonlytag.js
@@ -0,0 +1,11 @@
+(function() {
+    var docSet = testhelpers.getDocSetFromFile('test/cases/readonlytag.js'),
+        Collection = docSet.getByLongname('Collection')[0],
+        length = docSet.getByLongname('Collection#length')[0];
+
+    //dump(docSet.doclets); exit(0);
+    
+    test('When a symbol has an @readonly tag, the doclet has an readonly property that is true.', function() {
+        assert.equal(length.readonly, true);
+    });
+})();
\ No newline at end of file