diff --git a/ch01.asciidoc b/ch01.asciidoc
index 37e825a4..75c40236 100644
--- a/ch01.asciidoc
+++ b/ch01.asciidoc
@@ -128,7 +128,7 @@ When Alice runs Mycelium for the first time, as with many bitcoin wallets, the a
 .The Mycelium Mobile Wallet
 image::images/mbc2_0101.png["MyceliumWelcome"]
 
-((("adresses", "bitcoin wallet quickstart example")))The most important part of this screen is Alice's _bitcoin address_. On the screen it appears as a long string of letters and numbers: +1Cdid9KFAaatwczBwBttQcwXYCpvK8h7FK+. Next to the wallet's bitcoin address is a QR code, a form of barcode that contains the same information in a format that can be scanned by a smartphone camera. The QR code is the square with a pattern of black and white dots. Alice can copy the bitcoin address or the QR code onto her clipboard by tapping the QR code, or on the Receive button. In most wallets, tapping the QR code will also magnify it, so that it can be more easily scanned by a smartphone camera.
+((("adresses", "bitcoin wallet quickstart example")))((("QR codes", "bitcoin wallet quickstart example")))The most important part of this screen is Alice's _bitcoin address_. On the screen it appears as a long string of letters and numbers: +1Cdid9KFAaatwczBwBttQcwXYCpvK8h7FK+. Next to the wallet's bitcoin address is a QR code, a form of barcode that contains the same information in a format that can be scanned by a smartphone camera. The QR code is the square with a pattern of black and white dots. Alice can copy the bitcoin address or the QR code onto her clipboard by tapping the QR code, or on the Receive button. In most wallets, tapping the QR code will also magnify it, so that it can be more easily scanned by a smartphone camera.
 
 [TIP]
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