diff --git a/doc/paper/taler.tex b/doc/paper/taler.tex
index f35680f98..28d377f80 100644
--- a/doc/paper/taler.tex
+++ b/doc/paper/taler.tex
@@ -622,9 +622,9 @@ purposes.  The exchange's bank transfers dealing in traditional currency
 are expected to be recorded for tax authorities to ensure taxability.
 % FIXME: Auditor?
 
-We use RSA for denomination keys and EdDSA over some eliptic curve
-$\mathbb{E}$ for all other keys.  Let $G$ denote the generator of
-our elliptic curve $\mathbb{E}$.
+$S_K$ denotes RSA signing with denomination key $K$ and EdDSA
+over eliptic curve $\mathbb{E}$ for other types of keys.
+$G$ denotes the generator of elliptic curve $\mathbb{E}$.
 
 \subsection{Withdrawal}