diff --git a/src/lib/keyBindings/Actions.ts b/src/lib/keyBindings/Actions.ts
index 59b7077..5048131 100644
--- a/src/lib/keyBindings/Actions.ts
+++ b/src/lib/keyBindings/Actions.ts
@@ -95,7 +95,7 @@ class Actions {
         }
     }
 
-    public readonly windowMoveRight = (cm: ClientManager, dm: DesktopManager, window: Window, column: Column, grid: Grid, bottom: boolean = true) => {
+    public readonly windowMoveRight = (cm: ClientManager, dm: DesktopManager, window: Window, column: Column, grid: Grid, bottom = true) => {
         if (column.getWindowCount() === 1) {
             // move from own column into existing column
             const rightColumn = grid.getRightColumn(column);
diff --git a/src/tests/utils/mocks/MockKwinClient.ts b/src/tests/utils/mocks/MockKwinClient.ts
index f1ff78b..a731e87 100644
--- a/src/tests/utils/mocks/MockKwinClient.ts
+++ b/src/tests/utils/mocks/MockKwinClient.ts
@@ -6,8 +6,8 @@ class MockKwinClient {
     public caption = "App";
     public minSize: Readonly<QmlSize> = new MockQmlSize(0, 0);
     public readonly transient: boolean;
-    public move: boolean = false;
-    public resize: boolean = false;
+    public move = false;
+    public resize = false;
     public readonly fullScreenable: boolean = true;
     public readonly maximizable: boolean = true;
     public readonly output: Output = { __brand: "Output" };
@@ -18,17 +18,17 @@ class MockKwinClient {
     public readonly popupWindow: boolean = false;
     public readonly pid = 1;
 
-    private _maximizedVertically: boolean = false;
-    private _maximizedHorizontally: boolean = false;
-    private _fullScreen: boolean = false;
+    private _maximizedVertically = false;
+    private _maximizedHorizontally = false;
+    private _fullScreen = false;
     public activities: string[] = [];
-    public skipSwitcher: boolean = false;
-    public keepAbove: boolean = false;
-    public keepBelow: boolean = false;
-    private _minimized: boolean = false;
+    public skipSwitcher = false;
+    public keepAbove = false;
+    public keepBelow = false;
+    private _minimized = false;
     private _desktops: KwinDesktop[] = [];
     private _tile: Tile|null = null;
-    public opacity: number = 1.0;
+    public opacity = 1.0;
 
     public readonly fullScreenChanged = new MockQSignal<[]>();
     public readonly desktopsChanged = new MockQSignal<[]>();
@@ -42,8 +42,8 @@ class MockKwinClient {
     public readonly frameGeometryChanged = new MockQSignal<[oldGeometry: QmlRect]>();
 
     private windowedFrameGeometry: MockQmlRect;
-    private windowed: boolean = true;
-    private hasBorder: boolean = true;
+    private windowed = true;
+    private hasBorder = true;
 
     constructor(
         private _frameGeometry: MockQmlRect = new MockQmlRect(10, 10, 100, 200),
diff --git a/src/tests/utils/mocks/MockQSignal.ts b/src/tests/utils/mocks/MockQSignal.ts
index 9055da7..848e0df 100644
--- a/src/tests/utils/mocks/MockQSignal.ts
+++ b/src/tests/utils/mocks/MockQSignal.ts
@@ -1,7 +1,7 @@
 class MockQSignal<T extends unknown[]> {
     public readonly __brand = "QSignal";
 
-    private readonly handlers: Set<(...args: [...T]) => void> = new Set();
+    private readonly handlers = new Set<(...args: [...T]) => void>();
 
     public connect(handler: (...args: [...T]) => void) {
         this.handlers.add(handler);