diff --git a/www/tanks/submit.cgi b/www/tanks/submit.cgi
index 3a2e6e4..8e804ec 100755
--- a/www/tanks/submit.cgi
+++ b/www/tanks/submit.cgi
@@ -33,6 +33,7 @@ else:
     file = open(path, 'w')
     file.write('Team: %s\n' % quote(team))
     file.write('Color: #%s\n' % teams.color(team))
+    file.write('Content-Type: text/x-tanks-bullet\n')
     file.write('\n')
     file.write(code)
     file.close()