diff --git a/chap-sigmasig.tex b/chap-sigmasig.tex
index b18fcbe..de21cea 100644
--- a/chap-sigmasig.tex
+++ b/chap-sigmasig.tex
@@ -2,7 +2,7 @@
 % \addcontentsline{tof}{chapter}{\protect\numberline{\thechapter} Signatures de groupe dynamique à base de couplages}
 % \label{ch:sigmasig}
 %-------------------------------------------------
-In this chapter, we aim at lifting the \textit{signature with efficient protocols} from~\cite{LPY15} into the random oracle model in order to get an efficient construction~\cite{BR93}.
+In this chapter, we aim at lifting the \textit{signature with efficient protocols} from~\cite{LPY15} into the random oracle model in order to get an \textit{efficient} construction~\cite{BR93}.
 Signatures with efficient protocols in the Camenish and Lysyanskaya fashion~\cite{CL04a} are digital signatures which come with two companion protocols: a protocol whereby a signer can obliviously sign a committed message known only to the user and a zero-knowledge proof to efficiently attest possession of a hidden message-signature pair.
 
 This building block proved useful in the design of many efficient anonymity-related protocols such as anonymous credentials~\cite{Cha85,CL01}, which are similar to group signatures except that anonymity is irrevocable (meaning that there is no opening authority).