diff --git a/__tests__/vfs.js b/__tests__/vfs.js
index ca0a76b..4310615 100644
--- a/__tests__/vfs.js
+++ b/__tests__/vfs.js
@@ -79,7 +79,7 @@ describe('VFS', () => {
       .toBeInstanceOf(ArrayBuffer);
   });
 
-  test('writefile - blob', () => {
+  test('#writefile - blob', () => {
     return expect(call('writefile', 'null:/filename', new Blob()))
       .resolves
       .toBe(-1);
diff --git a/src/adapters/vfs/system.js b/src/adapters/vfs/system.js
index ceee251..3c653f4 100644
--- a/src/adapters/vfs/system.js
+++ b/src/adapters/vfs/system.js
@@ -59,7 +59,7 @@ const methods = (core, request) => {
   return {
     readdir: ({path}, options) => request('readdir', {
       path,
-      options: {}
+      options,
     }, 'json').then(({body}) => body),
 
     readfile: ({path}, type, options) =>
@@ -89,7 +89,7 @@ const methods = (core, request) => {
     stat: passthrough('stat'),
 
     url: ({path}, options) => Promise.resolve(
-      core.url(`/vfs/readfile?path=${encodeURIComponent(path)}`)
+      core.url(`/vfs/readfile?path.s=${encodeURIComponent(path)}`)
     ),
 
     search: ({path}, pattern, options) =>
@@ -102,7 +102,7 @@ const methods = (core, request) => {
     download: ({path}, options = {}) => {
       const json = encodeURIComponent(JSON.stringify({download: true}));
 
-      return Promise.resolve(`/vfs/readfile?options=${json}&path=` + encodeURIComponent(path))
+      return Promise.resolve(`/vfs/readfile?options=${json}&path.s=` + encodeURIComponent(path))
         .then(url => {
           return (options.target || window).open(url);
         });
diff --git a/src/vfs.js b/src/vfs.js
index 505ff14..5dc80e2 100644
--- a/src/vfs.js
+++ b/src/vfs.js
@@ -74,6 +74,13 @@ const handleDirectoryList = (path, options) => result =>
       filter: options.filter
     }));
 
+// Returns a new "options" object without properties from "ignore"
+const filterOptions = (ignore, options) => Object.fromEntries(
+  Object
+    .entries(options)
+    .filter(([k]) => !ignore.includes(k))
+);
+
 /**
  * Read a directory
  *
@@ -82,7 +89,7 @@ const handleDirectoryList = (path, options) => result =>
  * @return {Promise<object[]>} A list of files
  */
 export const readdir = (adapter, mount) => (path, options = {}) =>
-  adapter.readdir(pathToObject(path), options, mount)
+  adapter.readdir(pathToObject(path), filterOptions(['showHiddenFiles', 'filter'], options), mount)
     .then(handleDirectoryList(path, options));
 
 /**