diff --git a/hostapd/hostapd.conf b/hostapd/hostapd.conf
index eeb0055..9b70d0f 100644
--- a/hostapd/hostapd.conf
+++ b/hostapd/hostapd.conf
@@ -468,6 +468,13 @@
 # Require stations to support HT PHY (reject association if they do not)
 #require_ht=1
 
+# 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.
+#obss_interval=0
+
 ##### IEEE 802.11ac related configuration #####################################
 
 # ieee80211ac: Whether IEEE 802.11ac (VHT) is enabled