| Index: Source/modules/webmidi/MIDIMessageEventInit.idl | 
| diff --git a/Source/modules/webmidi/MIDIMessageEventInit.idl b/Source/modules/webmidi/MIDIMessageEventInit.idl | 
| index 4c9e046af180f007f955918b84867ad961cc7dc3..6228e5fc5f140c946aa1e872a60f270273a43047 100644 | 
| --- a/Source/modules/webmidi/MIDIMessageEventInit.idl | 
| +++ b/Source/modules/webmidi/MIDIMessageEventInit.idl | 
| @@ -4,7 +4,9 @@ | 
|  | 
| // http://webaudio.github.io/web-midi-api/#idl-def-MIDIMessageEventInit | 
|  | 
| -dictionary MIDIMessageEventInit : EventInit { | 
| +[ | 
| +    TypeChecking=Unrestricted, | 
| +] dictionary MIDIMessageEventInit : EventInit { | 
| double receivedTime; | 
| Uint8Array data; | 
| }; | 
|  |