diff --git a/main.tex b/main.tex
index 65ddda7..a4d8594 100644
--- a/main.tex
+++ b/main.tex
@@ -236,7 +236,7 @@ A (sometimes) useful trick, especially when working with the correlogram, is to
 \section{Descriptive Analysis}
 \subsection{Linear Transformation}
 $$Y_t = a + bX_t$$
-e.g. conversion of °F in °C \\
+e.g. conversion of $^\circ$F in $^\circ$C \\
 \vspace{.1cm}
 Such linear transformations will not change the appereance of the series. All derived results (i.e. autocorrelations, models, forecasts) will be equivalent. Hence, we are free to perform linear transformations whenever it seems convenient.