diff --git a/extensions/README.md b/extensions/README.md
index 23d7579a..312c28b7 100644
--- a/extensions/README.md
+++ b/extensions/README.md
@@ -157,7 +157,7 @@ func main() {
 ## Type Choice Extensions
 
 Type Choice extensions allow specifying alternative types for existing CoRIM
-fields by defining a struct that implements an appropriate interface and
+fields by defining a  type that implements an appropriate interface and
 registering it with CBOR tag.
 
 A type choice struct contains a single field, `Value`, that contains the actual