diff --git a/doc/arm/notes.xml b/doc/arm/notes.xml
index cd75d8578e..5ccef960e6 100644
--- a/doc/arm/notes.xml
+++ b/doc/arm/notes.xml
@@ -133,7 +133,7 @@
dnstap logfiles can now be configured to
automatically roll when they reach a specified size. If
dnstap-output is configured with mode
- file, then it can take optional
+ file, then it can take optional
size and versions
key-value arguments to set the logfile rolling parameters.
(These have the same semantics as the corresponding