diff --git a/highlight-worker.js b/highlight-worker.js
index 77c2348..9734932 100644
--- a/highlight-worker.js
+++ b/highlight-worker.js
@@ -8,11 +8,16 @@ importScripts('https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@9.16.2/build/
 onmessage = function (event) {
     var data = JSON.parse(event.data);
 
-    var result = self.hljs.highlight(data.lang, data.code);
+    try {
+        var result = self.hljs.highlight(data.lang, data.code);
+    } catch (e) {
+        var result = self.hljs.highlightAuto(data.code);
+    }
 
     postMessage(JSON.stringify({
         result: {
             value: result.value,
+            language: result.language,
         }, index: data.index
     }));
 };
diff --git a/mac-style.css b/mac-style.css
index 34612dc..33151c3 100644
--- a/mac-style.css
+++ b/mac-style.css
@@ -194,6 +194,10 @@ table.hljs-ln,
     border: none;
 }
 
+.hljs-ln td.hljs-ln-code:after {
+    content: " ";
+}
+
 td.hljs-ln-numbers {
     -webkit-touch-callout: none;
     -webkit-user-select: none;