diff --git a/cw/cw.tex b/cw/cw.tex
index a0873ca..df58850 100644
--- a/cw/cw.tex
+++ b/cw/cw.tex
@@ -188,8 +188,8 @@
 	\subsubsection*{6.1.2}
 	If the Alice used the the same r then this equation would only have 2 variables to solve, $a$ and $r$ which makes this equation possible to solve.
 	$$\begin{cases}
-		s  = r - h  \times a mod q\\
-		s' = r - h' \times a mod q
+		s  = r - h  \times a \text{ mod } q\\
+		s' = r - h' \times a \text{ mod } q
 	\end{cases}
 	$$