diff --git a/bin/named/config.c b/bin/named/config.c
index de180cf14d..6c5dd3dc72 100644
--- a/bin/named/config.c
+++ b/bin/named/config.c
@@ -66,7 +66,7 @@ options {\n\
 	geoip-directory \".\";\n"
 #endif /* if defined(HAVE_GEOIP2) */
 			    "\
-	interface-interval 60;\n\
+	interface-interval 60m;\n\
 	listen-on {any;};\n\
 	listen-on-v6 {any;};\n\
 	match-mapped-addresses no;\n\
diff --git a/doc/arm/reference.rst b/doc/arm/reference.rst
index a26db7103a..0592c64bf7 100644
--- a/doc/arm/reference.rst
+++ b/doc/arm/reference.rst
@@ -4010,9 +4010,10 @@ Periodic Task Intervals
    :tags: server
    :short: Sets the interval at which the server scans the network interface list.
 
-   The server scans the network interface list every :any:`interface-interval`
-   minutes. The default is 60 minutes; the maximum value is 28 days (40320
-   minutes). If set to 0, interface scanning only occurs when the configuration
+   The server scans the network interface list on every interval as specified by
+   :any:`interface-interval`.
+
+   If set to 0, interface scanning only occurs when the configuration
    file is loaded, or when :any:`automatic-interface-scan` is enabled and supported
    by the operating system. After the scan, the server begins listening for
    queries on any newly discovered interfaces (provided they are allowed by the
@@ -4020,6 +4021,8 @@ Periodic Task Intervals
    gone away. For convenience, TTL-style time-unit suffixes may be used to
    specify the value. It also accepts ISO 8601 duration formats.
 
+   The default is 60 minutes (1 hour); the maximum value is 28 days.
+
 .. _rrset_ordering:
 
 RRset Ordering