diff --git a/README.md b/README.md
index 3859c120..31b3946f 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-This package is now a sub-package in the
+This package is now a subpackage in the
 [btcutil](https://github.com/btcsuite/btcd/tree/master/btcutil) directory
 of the [btcd](https://github.com/btcsuite/btcd) repository.