diff --git a/ch05.asciidoc b/ch05.asciidoc
index 0af08bde..c0e268d5 100644
--- a/ch05.asciidoc
+++ b/ch05.asciidoc
@@ -93,7 +93,7 @@ garbage claim echo media make crunch
 * Multipurpose HD wallet structure, based on BIP-43
 * Multicurrency and multiaccount wallets, based on BIP-44
 
-These standards may change or may become obsolete by future developments, but for now they form a set of interlocking technologies that have become the de-facto wallet standard for bitcoin.
+These standards may change or may become obsolete by future developments, but for now they form a set of interlocking technologies that have become the de facto wallet standard for bitcoin.
 
 The standards have been adopted by a broad range of software and hardware bitcoin wallets, making all these wallets interoperable. A user can export a mnemonic generated on one of these wallets and import it in another wallet, recovering all transactions, keys, and addresses.