diff --git a/exam/ex.tex b/exam/ex.tex
index 49a9195..8133008 100644
--- a/exam/ex.tex
+++ b/exam/ex.tex
@@ -231,7 +231,10 @@
     \item Kyber512 is also a KEM and achieves the same level of (classical)
       security.
 
-    \item \TODO
+    \item One advantage of LEDAcrypt is that the key sizes are relatively small
+      compared to Classic McEliece, for example. Small key sizes are important
+      for transmission of public keys so that they can fit in commonly used
+      packet sizes.
 
     \item \TODO