diff --git a/calibre-plugin/plugin-defaults.ini b/calibre-plugin/plugin-defaults.ini
index a68a5d9..a0832d9 100644
--- a/calibre-plugin/plugin-defaults.ini
+++ b/calibre-plugin/plugin-defaults.ini
@@ -1226,6 +1226,11 @@ extracategories:Harry Potter
 ## Site dedicated to this fandom.
 extracategories: Mass Effect
 
+## Ucoz.com engine, upon which MassEffect2.in is based, imposes an unspecified limit on request frequency.
+## Sources vary from `5 requests per second' to `2 requests per second for more than 10 per minute'.
+## With default settings, a several-hours IP ban may follow, so set it lifted.
+slow_down_sleep_time: 2
+
 ## Whether to exclude editor signature from the bottom if chapter text.
 exclude_editor_signature: false
 
diff --git a/fanficfare/defaults.ini b/fanficfare/defaults.ini
index d9069cf..856bfa3 100644
--- a/fanficfare/defaults.ini
+++ b/fanficfare/defaults.ini
@@ -1827,6 +1827,11 @@ extracategories:Lord of the Rings
 ## Site dedicated to this fandom.
 extracategories: Mass Effect
 
+## Ucoz.com engine, upon which MassEffect2.in is based, imposes an unspecified limit on request frequency.
+## Sources vary from `5 requests per second' to `2 requests per second for more than 10 per minute'.
+## With default settings, a several-hours IP ban may follow, so set it lifted.
+slow_down_sleep_time: 2
+
 ## Whether to exclude editor signature from the bottom if chapter text.
 exclude_editor_signature: false