diff --git a/doc/main.conf b/doc/main.conf
index c9096ef2..0f67792b 100644
--- a/doc/main.conf
+++ b/doc/main.conf
@@ -56,10 +56,13 @@ roam_rssi_threshold=-70
 # blacklisting it. These three options configure how long a BSS is blacklisted
 # for.
 #
-# bss_blacklist_time -       The initial timeout for a blacklisted BSS
+# bss_blacklist_time -       The initial timeout for a blacklisted BSS in
+#                            seconds.
 # bss_blacklist_multiplier - What bss_blacklist_time is multiplied by after
-#                            future unsuccessful connection attempts.
-# bss_blacklist_max_time -   The maximum time a BSS can be blacklisted for.
+#                            future unsuccessful connection attempts in
+#                            seconds.
+# bss_blacklist_max_time -   The maximum time a BSS can be blacklisted for in
+#                            seconds.
 #
 #bss_blacklist_time=60
 #bss_blacklist_multiplier=30