diff --git a/scripts/ZoneMinder/lib/ZoneMinder/Event.pm b/scripts/ZoneMinder/lib/ZoneMinder/Event.pm
index 40b51a5fd..48544a911 100644
--- a/scripts/ZoneMinder/lib/ZoneMinder/Event.pm
+++ b/scripts/ZoneMinder/lib/ZoneMinder/Event.pm
@@ -32,6 +32,7 @@ require ZoneMinder::Base;
 require ZoneMinder::Object;
 require ZoneMinder::Storage;
 require ZoneMinder::Frame;
+require ZoneMinder::Monitor;
 require Date::Manip;
 require File::Find;
 require File::Path;