diff --git a/exam/ex.tex b/exam/ex.tex
index 0b59747..a460da5 100644
--- a/exam/ex.tex
+++ b/exam/ex.tex
@@ -423,10 +423,11 @@
 
     \item The size of the signature comprises the commitment, which is a graph
       of size $1107$, and the response. The commitment graph is encoded in
-      binary representation and requires $\binom{1107}{2} = \unit[612171]{bits}
-      = \unit[76521.375]{bytes}$. The response is $\lceil\log_2 1107\rceil\cdot
-      1107 = \unit[12.177]{kbit} = \unit[1522.125]{bytes}$. In total, the
-      signature is $\unit[78043.5]{bytes}$ big.
+      binary representation and requires at most (for a fully connected graph)
+      $\binom{1107}{2} = \unit[612171]{bits} = \unit[76521.375]{bytes}$. The
+      response is $\lceil\log_2 1107\rceil\cdot 1107 = \unit[12.177]{kbit} =
+      \unit[1522.125]{bytes}$. In total, the signature is
+      $\unit[78043.5]{bytes}$ big.
 
     \item The signature can be made smaller if the underlying graphs have less
       vertices. Unfortunately, this comes at a reduced level of security, which