diff --git a/_config.yml b/_config.yml
index ca714cf..4aabcd6 100644
--- a/_config.yml
+++ b/_config.yml
@@ -4,5 +4,5 @@ email: elbueler@alaska.edu
 github_username: bueler
 markdown: kramdown
 theme: jekyll-theme-cayman
-#kramdown:
-#  math_engine: mathjax
+kramdown:
+  math_engine: mathjax