diff --git a/README.md b/README.md
index 81a3ba0..2023545 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ extension CustomKeyboard {
                 }
                 Button("Can you repeat the question?") {
                     playSystemFeedback?()
-                    submit?()
+                    submit()
                 }
             }
             .buttonStyle(.bordered)
diff --git a/Sources/CustomKeyboardKit/CustomKeyboardBuilder.swift b/Sources/CustomKeyboardKit/CustomKeyboardBuilder.swift
index e70fd4a..3fde7ab 100644
--- a/Sources/CustomKeyboardKit/CustomKeyboardBuilder.swift
+++ b/Sources/CustomKeyboardKit/CustomKeyboardBuilder.swift
@@ -11,7 +11,7 @@ import SwiftUI
 
 ///`CustomKeyboardBuilder` lets you build a custom keyboard in SwiftUI, together with haptic/audible feedback and callback on a "submit" button if provided in your layout
 ///- `UITextDocumentProxy` provides you the capability to modify the text thats in focus (e.g. inserting characters or strings, deleting backwards etc.),
-///- `SubmitHandler?` closure parameter is a closure, when called triggers the registered closure (using the `.onSubmitCustomKeyboard(:)` modifier.
+///- `SubmitHandler` closure parameter is a closure, when called triggers the registered closure (using the `.onCustomSubmit(action:)` modifier.
 ///- `SystemFeedbackHandler?` closure parameter is a closure, when called will play the keyboard system sounds and haptic feedback if enabled in the settings by the user
 public class CustomKeyboardBuilder: CustomKeyboard {
     public init(@ViewBuilder customKeyboardView: @escaping ((UITextDocumentProxy, @escaping SubmitHandler, SystemFeedbackHandler?) -> some View)) {