diff --git a/ch04.asciidoc b/ch04.asciidoc
index 6abd6882..ae7538b6 100644
--- a/ch04.asciidoc
+++ b/ch04.asciidoc
@@ -28,7 +28,7 @@ When spending bitcoins, the current bitcoin owner presents their public key and
 
 [TIP]
 ====
-In most implementations, the private and public keys are stored together as a _key pair_ for convenience. However, it is trivial to reproduce the public key if one has the private key, so storing only the private key is also possible. 
+In most implementations, the private and public keys are stored together as a _key pair_ for convenience. However, the public key can be calculated from the private key, so it's possible to storing only the private key.
 ====
 
 ==== Private and Public Keys