diff --git a/modules/post/windows/manage/driver_loader.rb b/modules/post/windows/manage/driver_loader.rb
index cb23fb60cb..e01c286a77 100644
--- a/modules/post/windows/manage/driver_loader.rb
+++ b/modules/post/windows/manage/driver_loader.rb
@@ -66,7 +66,7 @@ class Metasploit3 < Msf::Post
       return
     end
 
-    unless  driver =~ /#{Regexp.escape(expand_path("%SYSTEMROOT%"))}/i
+    unless driver =~ Regexp.new(Regexp.escape(expand_path("%SYSTEMROOT%")), Regexp::IGNORECASE)
       print_error("The driver must be inside %SYSTEMROOT%.")
       return
     end