diff --git a/doc/api/fs.md b/doc/api/fs.md
index 504404654f3..21f300d3120 100644
--- a/doc/api/fs.md
+++ b/doc/api/fs.md
@@ -8481,7 +8481,6 @@ of bytes written is passed as the first argument to the event handler.
     * `writeBufferLen` {number}
     * `remainingBufferLen`: {number}
   * `sync`: {boolean} Perform writes synchronously.
-* Returns: {fs.Utf8Stream}
 
 #### `utf8Stream.append`
 
diff --git a/doc/type-map.json b/doc/type-map.json
index 0483bd15f5e..9e24eaca3e5 100644
--- a/doc/type-map.json
+++ b/doc/type-map.json
@@ -88,6 +88,7 @@
   "LockManager": "worker_threads.html#class-lockmanager",
   "MessagePort": "worker_threads.html#class-messageport",
   "MIMEParams": "util.html#class-utilmimeparams",
+  "MIMEType": "util.html#class-utilmimetype",
   "MockModuleContext": "test.html#class-mockmodulecontext",
   "module": "modules.html#the-module-object",
   "ModuleRequest": "vm.html#type-modulerequest",