diff --git a/util/gen-changelog.sh b/util/gen-changelog.sh
index ba6fcb0cb2..84018969be 100755
--- a/util/gen-changelog.sh
+++ b/util/gen-changelog.sh
@@ -17,7 +17,7 @@ fi
 cat > CHANGELOG.md <<EOD
 # Change Log
 
-##[${end}](https://github.com/Polymer/polymer/tree/${end}) (${enddate})
+## [${end}](https://github.com/Polymer/polymer/tree/${end}) (${enddate})
 `git log --no-merges "${startrev}".."${endrev}^1" --pretty="${PRETTY}"`
 
 ${old}