diff --git a/Proton/Tests/Core/Mocks/MockKeyboardPress.swift b/Proton/Tests/Core/Mocks/MockKeyboardPress.swift
index b16d9bdc..26f031bc 100644
--- a/Proton/Tests/Core/Mocks/MockKeyboardPress.swift
+++ b/Proton/Tests/Core/Mocks/MockKeyboardPress.swift
@@ -22,7 +22,7 @@ import UIKit
 
 @available(iOS 13.4, *)
 class MockUIPress: UIPress {
-    var _characters: String
+    private let _characters: String
     override var key: UIKey? {
         MockUIKey(characters: _characters)
     }
@@ -34,7 +34,7 @@ class MockUIPress: UIPress {
 
 @available(iOS 13.4, *)
 class MockUIKey: UIKey {
-    var _characters: String
+    private let _characters: String
     override var charactersIgnoringModifiers: String { _characters }
 
     init(characters: String) {
diff --git a/Proton/Tests/Core/RichTextViewContextTests.swift b/Proton/Tests/Core/RichTextViewContextTests.swift
index bef5a5d7..b2f9bb35 100644
--- a/Proton/Tests/Core/RichTextViewContextTests.swift
+++ b/Proton/Tests/Core/RichTextViewContextTests.swift
@@ -172,12 +172,13 @@ class RichTextViewContextTests: XCTestCase {
         let selectedRange = NSRange.zero
         textView.selectedRange = selectedRange
 
-        mockTextViewDelegate.onShouldHandleKey = { _, key, _, range, _ in
+        mockTextViewDelegate.onShouldHandleKey = { _, key, _, _, _ in
             XCTAssertEqual(key, EditorKey.right)
             testExpectation.fulfill()
         }
 
-        textView.pressesBegan(Set(arrayLiteral: MockUIPress(characters: UIKeyCommand.inputRightArrow)), with: nil)
+        let uiPresses: Set<UIPress> = [MockUIPress(characters: UIKeyCommand.inputRightArrow)]
+        textView.pressesBegan(uiPresses, with: nil)
         waitForExpectations(timeout: 1.0)
     }