diff --git a/07.md b/07.md
index 9f836d87a..3b72c925c 100644
--- a/07.md
+++ b/07.md
@@ -11,7 +11,7 @@ The `window.nostr` object may be made available by web browsers or extensions an
 That object must define the following methods:
 
 ```
-async window.nostr.getPublicKey(): string // returns a public key as hex
+async window.nostr.getPublicKey({optional: bool}): string // returns a public key as hex. If optional is true, don't show popup to user, return pubkey only if permission had been already granted, null otherwise.
 async window.nostr.signEvent(event: { created_at: number, kind: number, tags: string[][], content: string }): Event // takes an event object, adds `id`, `pubkey` and `sig` and returns it
 ```