diff --git a/modules/exploits/multi/browser/mozilla_compareto.rb b/modules/exploits/multi/browser/mozilla_compareto.rb
index d0e6c9c864..781afadd04 100644
--- a/modules/exploits/multi/browser/mozilla_compareto.rb
+++ b/modules/exploits/multi/browser/mozilla_compareto.rb
@@ -51,6 +51,7 @@ class Exploits::Multi::Browser::Mozilla_CompareTo < Msf::Exploit::Remote
 						{
 							'Platform' => 'win',
 							'Arch' => ARCH_X86,
+							'StackAdjustment' => -3500,
 							'Addrs' => [ 0x12000000, 0x11C0002C, 0x1200002C, 0x1180002C ],
 							
 						}