diff --git a/ch08_signatures.adoc b/ch08_signatures.adoc
index 6bf15e3d..9e152163 100644
--- a/ch08_signatures.adoc
+++ b/ch08_signatures.adoc
@@ -56,7 +56,7 @@ signing key is the user's private key. The result is the signature:
 [latexmath]
 ++++
 \begin{equation}
-(Sig = F_{sig}(F_{hash}(m), x))
+Sig = F_{sig}(F_{hash}(m), x)
 \end{equation}
 ++++