diff --git a/doc/src.high-level/high-level-chain-mgr.tex b/doc/src.high-level/high-level-chain-mgr.tex
index 91209fe..0cebc99 100644
--- a/doc/src.high-level/high-level-chain-mgr.tex
+++ b/doc/src.high-level/high-level-chain-mgr.tex
@@ -491,7 +491,7 @@ AP/eventually consistent mode.
 
 On $a$'s network-partitioned island, $a$ can choose
 an active chain definition of {\tt [A]}.
-Similarly $b$ can choose a definition of {\tt [B]}.  Both $a$ and $B$
+Similarly $b$ can choose a definition of {\tt [B]}.  Both $a$ and $b$
 might choose the
 epoch for their proposal to be \#42.  Because each are separated by
 network partition, neither can realize the conflict.