diff --git a/cw/cw.tex b/cw/cw.tex
index b256a02..a5a03f9 100644
--- a/cw/cw.tex
+++ b/cw/cw.tex
@@ -141,7 +141,7 @@
 	if the oracle selects b=1:
 
 	If q is big enough, there will be colissions:
-	$$\exists i,k : i \ne j \and P[i] \eq P[j] \and R[i] = R[j] \implies E_1[i] = E_1[j]$$
+	$$\exists i,k : i \ne j \and P\[i\] \eq P\[j\] \and R\[i\] = R\[j\] \implies E_1\[i\] = E_1\[j\]$$
 	where $R$ is the list of random values generated for each pair
 
 	\subsection*{4.3}