diff --git a/lib/watir-screenshot-stitch.rb b/lib/watir-screenshot-stitch.rb
index <HASH>..<HASH> 100644
--- a/lib/watir-screenshot-stitch.rb
+++ b/lib/watir-screenshot-stitch.rb
@@ -149,7 +149,7 @@ module Watir
       end
 
       def webdrivers_defined?
-        'Webdrivers'.constantize
+        Object.const_get("Webdrivers")
       rescue
         nil
       end
Remove dependency to ActiveSupport to find geckodriver

`.constantize` is a method defined in ActiveRecord (<URL>) and not available for plain Ruby projects.



Replacing this line with `Object.const_get` will fix it, and will allow us to run in all environments.