diff --git a/modules/exploits/windows/browser/mozilla_nstreerange.rb b/modules/exploits/windows/browser/mozilla_nstreerange.rb
index a8f3357280..ea2cfdffc5 100644
--- a/modules/exploits/windows/browser/mozilla_nstreerange.rb
+++ b/modules/exploits/windows/browser/mozilla_nstreerange.rb
@@ -148,7 +148,7 @@ class Metasploit3 < Msf::Exploit::Remote
 		callchain = []
 			
 		# Adding calls by hand is tedious, look at the bottom for an explanation of these values
-		add_call = Proc.new {|offset, arg1, arg2, direct = false|
+		add_call = Proc.new { |offset, arg1, arg2, direct |
 			next_offset = base_offset + (callchain.flatten.length*4)
 			callchain[-1][2] = next_offset if callchain.length > 0 # connect new frame to last one