diff --git a/src/main/java/wtf/beatrice/autosqueal/Main.java b/src/main/java/wtf/beatrice/autosqueal/Main.java
index e55fc6b..816182a 100644
--- a/src/main/java/wtf/beatrice/autosqueal/Main.java
+++ b/src/main/java/wtf/beatrice/autosqueal/Main.java
@@ -9,8 +9,6 @@ import wtf.beatrice.autosqueal.ui.MainWindow;
 
 public class Main {
 
-    private static boolean running = true;
-
     private static final Logger LOGGER = LogManager.getLogger(Main.class);
     private static final MainWindow mainWindow = new MainWindow();
 
diff --git a/src/main/java/wtf/beatrice/autosqueal/controls/CursorMover.java b/src/main/java/wtf/beatrice/autosqueal/controls/CursorMover.java
index 7043429..8654d8f 100644
--- a/src/main/java/wtf/beatrice/autosqueal/controls/CursorMover.java
+++ b/src/main/java/wtf/beatrice/autosqueal/controls/CursorMover.java
@@ -14,14 +14,14 @@ public class CursorMover extends TimerTask
 {
 
     private static final Logger LOGGER = LogManager.getLogger(CursorMover.class);
-    private final Random RANDOM;
+    private final Random random;
 
     private static final int LOOPS_BEFORE_CLICK = 5;
 
     private int iteration = 0;
 
     public CursorMover() {
-        RANDOM = new SecureRandom();
+        random = new SecureRandom();
     }
 
     @Override
@@ -45,8 +45,8 @@ public class CursorMover extends TimerTask
 
             iteration = 0;
         } else {
-            destX = RANDOM.nextInt(RunnerUtil.SCREEN_WIDTH);
-            destY = RANDOM.nextInt(RunnerUtil.SCREEN_HEIGHT);
+            destX = random.nextInt(RunnerUtil.SCREEN_WIDTH);
+            destY = random.nextInt(RunnerUtil.SCREEN_HEIGHT);
 
             singleStepMovementTask = new SingleStepMovementTask(destX, destY, false);
 
diff --git a/src/main/java/wtf/beatrice/autosqueal/controls/SingleStepMovementTask.java b/src/main/java/wtf/beatrice/autosqueal/controls/SingleStepMovementTask.java
index c860f35..6c0b478 100644
--- a/src/main/java/wtf/beatrice/autosqueal/controls/SingleStepMovementTask.java
+++ b/src/main/java/wtf/beatrice/autosqueal/controls/SingleStepMovementTask.java
@@ -55,7 +55,7 @@ public class SingleStepMovementTask extends TimerTask {
         try {
             robot = new Robot();
         } catch (AWTException e) {
-            throw new RuntimeException(e);
+            LOGGER.error(e);
         }
 
     }
diff --git a/src/main/java/wtf/beatrice/autosqueal/listener/CursorMoveListener.java b/src/main/java/wtf/beatrice/autosqueal/listener/CursorMoveListener.java
index af8b599..fde5f4a 100644
--- a/src/main/java/wtf/beatrice/autosqueal/listener/CursorMoveListener.java
+++ b/src/main/java/wtf/beatrice/autosqueal/listener/CursorMoveListener.java
@@ -11,9 +11,6 @@ public class CursorMoveListener extends TimerTask {
     private int oldX;
     private int oldY;
 
-    private int newX;
-    private int newY;
-
     private int loops;
     private boolean isUserAway;
 
@@ -28,8 +25,8 @@ public class CursorMoveListener extends TimerTask {
 
     @Override
     public void run() {
-        newX = MouseInfo.getPointerInfo().getLocation().x;
-        newY = MouseInfo.getPointerInfo().getLocation().y;
+        int newX = MouseInfo.getPointerInfo().getLocation().x;
+        int newY = MouseInfo.getPointerInfo().getLocation().y;
 
         if(newX != oldX || newY != oldY) {
             // cursor has been moved
diff --git a/src/main/java/wtf/beatrice/autosqueal/ui/MainWindow.java b/src/main/java/wtf/beatrice/autosqueal/ui/MainWindow.java
index 38aeda8..acfdfa9 100644
--- a/src/main/java/wtf/beatrice/autosqueal/ui/MainWindow.java
+++ b/src/main/java/wtf/beatrice/autosqueal/ui/MainWindow.java
@@ -23,11 +23,6 @@ public class MainWindow
     private CursorMover cursorMover = new CursorMover();
     private Button toggleButton;
 
-
-    public MainWindow() {
-
-    }
-
     public void init() {
 
         JFrame frame = new JFrame();