diff --git a/index.html b/index.html
index 5aef74d..bd1e4e0 100644
--- a/index.html
+++ b/index.html
@@ -2044,7 +2044,7 @@
The record type string
[[\Id]] |
- An empty string. |
+ `undefined` |
The {{NDEFScanOptions}}.id value.
|
@@ -2058,7 +2058,7 @@ The record type string
[[\MediaType]] |
- An empty string. |
+ `undefined` |
The {{NDEFScanOptions}}.mediaType value.
|
@@ -3563,7 +3563,7 @@ Writing or pushing content
Let |matched:boolean| be `false`.
- If |reader|.[[\Id]] is not empty string and is equal to
+ If |reader|.[[\Id]] is not `undefined` and is equal to
|record|'s id,
[= iteration/continue =].
If it is equal, set |matched| to `true`.
@@ -3576,7 +3576,7 @@ Writing or pushing content
If it is equal, set |matched| to `true`.
- If |reader|.[[\MediaType]] is not empty string and is not
+ If |reader|.[[\MediaType]] is not `undefined` and is not
equal to
|record|'s mediaType,
[= iteration/continue =].