diff --git a/scripts/meterpreter/hashdump.rb b/scripts/meterpreter/hashdump.rb
index 920630c2e5..07830815b9 100644
--- a/scripts/meterpreter/hashdump.rb
+++ b/scripts/meterpreter/hashdump.rb
@@ -8,6 +8,12 @@ opts = Rex::Parser::Arguments.new(
 	"-p" => [ true, "The SMB port used to associated credentials."]
 )
 
+os = client.sys.config.sysinfo["OS"].downcase
+unless (os =~ /win/)
+	print_error("Not a windows system")
+	raise Rex::Script::Completed
+end
+
 smb_port = 445
 
 opts.parse(args) { |opt, idx, val|