diff --git a/external/ruby-lorcon/extconf.rb b/external/ruby-lorcon/extconf.rb
index e8d0734b90..2378d1bfca 100644
--- a/external/ruby-lorcon/extconf.rb
+++ b/external/ruby-lorcon/extconf.rb
@@ -1,7 +1,7 @@
 #!/usr/bin/env ruby
 require 'mkmf'
 
-if have_library("orcon", "tx80211_txpacket")
+if have_library("orcon", "tx80211_txpacket", "tx80211.h")
 	create_makefile("Lorcon")
 else
 	puts "Error: the lorcon library was not found, please see the README"