diff --git a/huddle-test-geophones/index.html b/huddle-test-geophones/index.html
index f28bc61..5c54b87 100644
Binary files a/huddle-test-geophones/index.html and b/huddle-test-geophones/index.html differ
diff --git a/huddle-test-geophones/index.org b/huddle-test-geophones/index.org
index b336dc2..a62e673 100644
--- a/huddle-test-geophones/index.org
+++ b/huddle-test-geophones/index.org
@@ -17,8 +17,6 @@
 #+HTML_HEAD: <script type="text/javascript" src="../js/jquery.stickytableheaders.min.js"></script>
 #+HTML_HEAD: <script type="text/javascript" src="../js/readtheorg.js"></script>
 
-#+HTML_MATHJAX: align: center tagside: right font: TeX
-
 #+PROPERTY: header-args:matlab  :session *MATLAB*
 #+PROPERTY: header-args:matlab+ :comments org
 #+PROPERTY: header-args:matlab+ :results none
@@ -359,7 +357,7 @@ Each sensor has noise $N$ and $M$.
 #+CAPTION: Huddle test block diagram
 [[file:figs/huddle-test.png]]
 
-We here assume that each sensor has the same magnitude of instrumental noise ($N = M$).
+We here assume that each sensor has the same magnitude of instrumental noise: $N = M$.
 We also assume that $S_1 = S_2 = 1$.
 
 We then obtain: