1 files changed, 4 insertions, 4 deletions
diff --git a/components/script/dom/webidls/File.webidl b/components/script/dom/webidls/File.webidl
index 04e670723e4..143df2f8f13 100644
--- a/components/script/dom/webidls/File.webidl
+++ b/components/script/dom/webidls/File.webidl
@@ -4,11 +4,11 @@
 
 // https://w3c.github.io/FileAPI/#file
 
-[Constructor(sequence<BlobPart> fileBits,
-            DOMString fileName,
-            optional FilePropertyBag options = {}),
- Exposed=(Window,Worker)]
+[Exposed=(Window,Worker)]
 interface File : Blob {
+  [Throws] constructor(sequence<BlobPart> fileBits,
+              DOMString fileName,
+              optional FilePropertyBag options = {});
   readonly attribute DOMString name;
   readonly attribute long long lastModified;
 };