diff --git a/doc/arm/Bv9ARM.ch06.html b/doc/arm/Bv9ARM.ch06.html
index a608e4331b..71efb68122 100644
--- a/doc/arm/Bv9ARM.ch06.html
+++ b/doc/arm/Bv9ARM.ch06.html
@@ -14,7 +14,7 @@
- OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- PERFORMANCE OF THIS SOFTWARE.
-->
-
+
@@ -1315,7 +1315,7 @@ record does) the DNSKEY RRset is deemed to be trusted.
dnssec-must-be-secure
-Specify heirachies which must / may not be secure (signed and validated).
+Specify heirarchies which must / may not be secure (signed and validated).
If yes then named will only accept answers if they
are secure.
If no then normal dnssec validation applies