diff --git a/README.in b/README.in
index 227d276..59a448b 100644
--- a/README.in
+++ b/README.in
@@ -14,7 +14,7 @@ The `jfsm` package provides implementations of finite state machines.
 
 ## Usage
 
-Declare on a type that will be used to represent the states of the FSM.
+Declare a type that will be used to represent the states of the FSM.
 An `enum` type or a `sealed` hierarchy is a good choice.
 
 ```
diff --git a/README.md b/README.md
index c79c567..25c3845 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ The `jfsm` package provides implementations of finite state machines.
 
 ## Usage
 
-Declare on a type that will be used to represent the states of the FSM.
+Declare a type that will be used to represent the states of the FSM.
 An `enum` type or a `sealed` hierarchy is a good choice.
 
 ```