diff --git a/lib/builder.js b/lib/builder.js
index f233a087..dd31aca3 100644
--- a/lib/builder.js
+++ b/lib/builder.js
@@ -1618,10 +1618,13 @@ YUI.add('doc-builder', function (Y) {
                     if (!Y.Files.isDirectory(path.join(self.options.outdir, 'assets'))) {
                         fs.mkdirSync(path.join(self.options.outdir, 'assets'), 0777);
                     }
-                    Y.Files.copyAssets([
-                            path.join(DEFAULT_THEME, 'assets'),
-                            path.join(themeDir, 'assets')
-                        ],
+                    var defaultThemePath = fs.realpathSync(path.join(DEFAULT_THEME, 'assets'));
+                    var currentThemePath = fs.realpathSync(path.join(themeDir, 'assets'));
+                    var sourceFolders = [path.join(DEFAULT_THEME, 'assets')];
+                    if (currentThemePath !== defaultThemePath) {
+                        sourceFolders.push(path.join(themeDir, 'assets'));
+                    }
+                    Y.Files.copyAssets(sourceFolders,
                         path.join(self.options.outdir, 'assets'),
                         false,
                         function () {