diff --git a/lib/ecstatic.js b/lib/ecstatic.js
index ffd797a..25e448f 100755
--- a/lib/ecstatic.js
+++ b/lib/ecstatic.js
@@ -249,6 +249,9 @@ var ecstatic = module.exports = function (dir, options) {
 
 ecstatic.version = version;
 ecstatic.showDir = showDir;
+ecstatic.resetMimeTypes = function() {
+  mime = new mime.Mime();
+};
 
 // Check to see if we should try to compress a file with gzip.
 function shouldCompress(req) {
diff --git a/test/content-type.js b/test/content-type.js
index 4dafc89..55d53de 100644
--- a/test/content-type.js
+++ b/test/content-type.js
@@ -2,10 +2,11 @@
 var test = require('tap').test,
     http = require('http'),
     request = require('request'),
-    ecstatic;
+    ecstatic = require('../');
 
 function setup(opts) {
-  ecstatic = require('../');
+  // get a fresh ecstatic with a new mime object
+  ecstatic.resetMimeTypes();
   return http.createServer(ecstatic(opts));
 }
 function teardown(t) {