diff --git a/hostapd/hostapd.conf b/hostapd/hostapd.conf
index b370f21f3..1e5695984 100644
--- a/hostapd/hostapd.conf
+++ b/hostapd/hostapd.conf
@@ -494,9 +494,9 @@ wmm_ac_vo_acm=0
 
 # If set non-zero, require stations to perform scans of overlapping
 # channels to test for stations which would be affected by 40 MHz traffic.
-# This parameter sets the interval in seconds between these scans. This
-# is useful only for testing that stations properly set the OBSS interval,
-# since the other parameters in the OBSS scan parameters IE are set to 0.
+# This parameter sets the interval in seconds between these scans. Setting this
+# to non-zero allows 2.4 GHz band AP to move dynamically to a 40 MHz channel if
+# no co-existence issues with neighboring devices are found.
 #obss_interval=0
 
 ##### IEEE 802.11ac related configuration #####################################