diff --git a/config/initializers/100-logster.rb b/config/initializers/100-logster.rb
index ada7b9dd08e..5748c30ae07 100644
--- a/config/initializers/100-logster.rb
+++ b/config/initializers/100-logster.rb
@@ -64,7 +64,7 @@ store.redis_raw_connection = redis.without_namespace
 severities = [Logger::WARN, Logger::ERROR, Logger::FATAL, Logger::UNKNOWN]
 
 RailsMultisite::ConnectionManagement.each_connection do
-  error_rate_per_minute = SiteSetting.alert_admins_if_errors_per_minute
+  error_rate_per_minute = SiteSetting.alert_admins_if_errors_per_minute rescue 0
 
   if error_rate_per_minute > 0
     store.register_rate_limit_per_minute(severities, error_rate_per_minute) do |rate|
@@ -72,7 +72,7 @@ RailsMultisite::ConnectionManagement.each_connection do
     end
   end
 
-  error_rate_per_hour = SiteSetting.alert_admins_if_errors_per_hour
+  error_rate_per_hour = SiteSetting.alert_admins_if_errors_per_hour rescue 0
 
   if error_rate_per_hour > 0
     store.register_rate_limit_per_hour(severities, error_rate_per_hour) do |rate|