diff --git a/lib/rgeo/geos.rb b/lib/rgeo/geos.rb
index 0ce60b77..d28a5548 100644
--- a/lib/rgeo/geos.rb
+++ b/lib/rgeo/geos.rb
@@ -26,6 +26,8 @@ module Geos
     begin
       require_relative "geos/geos_c_impl"
     rescue LoadError
+      # fall back to a system-wide search if the c-extension is stored in different location
+      # important for systems such as Amazon Linux
       begin
         require "geos/geos_c_impl"
       rescue LoadError