diff --git a/playground/playgrounds.go b/playground/playgrounds.go
index ea35788..490a413 100644
--- a/playground/playgrounds.go
+++ b/playground/playgrounds.go
@@ -55,7 +55,7 @@ func IndexHandler(w http.ResponseWriter, r *http.Request) {
 
 	// try to load file
 	code := conf.HelloWorld
-	fileName := "8b7cc38b4c12e6fde5c4d15a4f2f32e5.go" // MD5 of HelloWorld.go
+	fileName := "6c5595ec6fbadf4cfce3edbfcfd8c6d0.go" // MD5 of HelloWorld.go
 
 	if strings.HasSuffix(r.URL.Path, ".go") {
 		fileNameArg := r.URL.Path[len("/playground/"):]
diff --git a/static/js/playground.js b/static/js/playground.js
index 32411e8..e170422 100644
--- a/static/js/playground.js
+++ b/static/js/playground.js
@@ -303,11 +303,19 @@ var playground = {
 
             playground.pid = data.pid;
 
-            var output = data.output;
+            var output = $("#output").html();
+            if ("" === output) {
+                output = "<pre>" + data.output + "</pre>";
+            } else {
+                output = output.replace(/<\/pre>$/g, data.output + '</pre>');
+            }
             output = output.replace(/\r/g, '');
             output = output.replace(/\n/g, '<br/>');
-            var oldOutput = $("#output").html();
-            $("#output").html(oldOutput + output);
+            if (-1 !== output.indexOf("<br/>")) {
+                output = Autolinker.link(output);
+            }
+
+            $("#output").html(output);
         };
         playgroundWS.onclose = function (e) {
             console.log('[playground onclose] disconnected (' + e.code + ')');
diff --git a/views/playground/index.html b/views/playground/index.html
index f8c8957..608e7e8 100644
--- a/views/playground/index.html
+++ b/views/playground/index.html
@@ -98,7 +98,7 @@
 
         <script type="text/javascript" src="/static/js/lib/jquery-2.1.1.min.js"></script>
         <script type="text/javascript" src="/static/js/lib/reconnecting-websocket.js"></script>
-
+        <script type="text/javascript" src="/static/js/lib/Autolinker.min.js"></script>
         <script type="text/javascript" src="/static/js/lib/codemirror-{{.codeMirrorVer}}/codemirror.min.js"></script>
         <script type="text/javascript" src="/static/js/lib/codemirror-{{.codeMirrorVer}}/addon/selection/active-line.js"></script>
         <script type="text/javascript" src="/static/js/overwrite/codemirror/addon/hint/show-hint.js"></script>