1 files changed, 1 insertions, 1 deletions
diff --git a/doc/refman/RefMan-tacex.tex b/doc/refman/RefMan-tacex.tex
index 9f4ddc804..cb8f916f1 100644
--- a/doc/refman/RefMan-tacex.tex
+++ b/doc/refman/RefMan-tacex.tex
@@ -849,7 +849,7 @@ Ltac DSimplif trm :=
 Ltac Length trm :=
   match trm with
   | (_ * ?B) => let succ := Length B in constr:(S succ)
-  | _ => constr:1
+  | _ => constr:(1)
   end.
 Ltac assoc := repeat rewrite <- Ass.
 \end{coq_example}