diff --git a/share/man/man4/ipsec.4 b/share/man/man4/ipsec.4
index 59cfacd8b90..112fadb9522 100644
--- a/share/man/man4/ipsec.4
+++ b/share/man/man4/ipsec.4
@@ -408,7 +408,7 @@ size may alleviate this problem.
 .Pp
 The
 .Tn IPcomp
-protocol may occationally error because of
+protocol may occasionally error because of
 .Xr zlib 3
 problems.
 .Pp