diff --git a/exam/ex.tex b/exam/ex.tex
index c1e6686..f26bce6 100644
--- a/exam/ex.tex
+++ b/exam/ex.tex
@@ -319,7 +319,6 @@
       probability that $\mathcal{P}$ convinces $\mathcal{V}$ is
       $1/2^{130}$ (soundness error).
       
-
     \item The soundness error after one iteration is $1/2^{130}$. To achieve
       a $1/2^{192}$ soundness error, the protocol should be done twice to arrive
       at a soundness error of $1/2^{260}$, which is well below the required