diff --git a/doc/paper/taler.tex b/doc/paper/taler.tex
index 6c8092719..9db843137 100644
--- a/doc/paper/taler.tex
+++ b/doc/paper/taler.tex
@@ -1375,7 +1375,7 @@ advantage for linking Taler coins gives rise to an adversary with
 \end{proposition}
 % TODO: Is independence here too strong?
 
-In fact, the exchange can launch an chosen cphertext attack against
+In fact, the exchange can launch a chosen ciphertext attack against
 a dishonest customer who uses the linking protocol.  We ignore this
 because we exclude such coins from our privacy garentees and the
 exchange can even invent coins whole cloth.