diff --git a/dist/showdown.js b/dist/showdown.js
index 82e9782..2c06d8a 100644
Binary files a/dist/showdown.js and b/dist/showdown.js differ
diff --git a/dist/showdown.js.map b/dist/showdown.js.map
index dfb569c..14d2295 100644
Binary files a/dist/showdown.js.map and b/dist/showdown.js.map differ
diff --git a/dist/showdown.min.js b/dist/showdown.min.js
index d6436b0..642e70a 100644
Binary files a/dist/showdown.min.js and b/dist/showdown.min.js differ
diff --git a/dist/showdown.min.js.map b/dist/showdown.min.js.map
index 6f33733..e316a69 100644
Binary files a/dist/showdown.min.js.map and b/dist/showdown.min.js.map differ
diff --git a/src/showdown.js b/src/showdown.js
index 28c77bb..01e750b 100644
--- a/src/showdown.js
+++ b/src/showdown.js
@@ -11,7 +11,6 @@ var showdown = {},
     flavor = {
       github: {
         omitExtraWLInCodeBlocks:              true,
-        prefixHeaderId:                       'user-content-',
         simplifiedAutoLink:                   true,
         excludeTrailingPunctuationFromURLs:   true,
         literalMidWordUnderscores:            true,