diff --git a/src/highlightjs-line-numbers.js b/src/highlightjs-line-numbers.js
index a6c10e8..a357480 100644
--- a/src/highlightjs-line-numbers.js
+++ b/src/highlightjs-line-numbers.js
@@ -15,6 +15,7 @@
         w.hljs.initLineNumbersOnLoad = initLineNumbersOnLoad;
         w.hljs.lineNumbersBlock = lineNumbersBlock;
         w.hljs.lineNumbersValue = lineNumbersValue;
+        w.hljs.lineNumbersInternal = lineNumbersInternal;
 
         addStyles();
     } else {