diff --git a/lib/jsdoc/util/templateHelper.js b/lib/jsdoc/util/templateHelper.js
index e52ea89c..c9417064 100644
--- a/lib/jsdoc/util/templateHelper.js
+++ b/lib/jsdoc/util/templateHelper.js
@@ -98,7 +98,7 @@ var longnameToUrl = exports.longnameToUrl = linkMap.longnameToUrl;
 var linkto = exports.linkto = function(longname, linktext, cssClass) {
     var classString = cssClass ? util.format(' class="%s"', cssClass) : '';
     var text = linktext || longname;
-    var url = longnameToUrl[longname];
+    var url = hasOwnProp.call(longnameToUrl, longname) && longnameToUrl[longname];
 
     if (!url) {
         return text;
@@ -356,7 +356,7 @@ function toLink(longname, content, monospace) {
     }
     else {
         // the actual longname is stored in `url` if there was a delimiter.
-        url = linkMap.longnameToUrl[longname];
+        url = hasOwnProp.call(linkMap.longnameToUrl, longname) && linkMap.longnameToUrl[longname];
     }
 
     content = content || longname;
diff --git a/test/specs/jsdoc/util/templateHelper.js b/test/specs/jsdoc/util/templateHelper.js
index 6718a820..f33f635e 100644
--- a/test/specs/jsdoc/util/templateHelper.js
+++ b/test/specs/jsdoc/util/templateHelper.js
@@ -235,6 +235,13 @@ describe("jsdoc/util/templateHelper", function() {
             var link = helper.linkto('linktoTest', 'link text', 'myclass');
             expect(link).toEqual('<a href="test.html" class="myclass">link text</a>');
         });
+
+        it("is careful with longnames that are reserved words in JS", function() {
+            // we don't have a registered link for 'constructor' so it should return the text 'link text'.
+            var link = helper.linkto('constructor', 'link text');
+            expect(typeof link).toBe('string');
+            expect(link).toBe('link text');
+        });
     });
 
     describe("htmlsafe", function() {
@@ -952,6 +959,12 @@ describe("jsdoc/util/templateHelper", function() {
             expect(output).toEqual('Link to <a href="path/to/test.html">test</a>');
         });
 
+        it('should be careful with linking to links whose names are reserved JS keywords', function() {
+            var input = 'Link to {@link constructor}',
+                output = helper.resolveLinks(input);
+            expect(output).toBe('Link to constructor');
+        });
+
         // conf.monospaceLinks. check that
         // a) it works
         it('if conf.monospaceLinks is true, all {@link} should be monospace', function () {