diff --git a/core/src/com/me/brickbuster/BrickBuster.java b/core/src/com/me/brickbuster/BrickBuster.java
index 107874d..9fb6196 100644
--- a/core/src/com/me/brickbuster/BrickBuster.java
+++ b/core/src/com/me/brickbuster/BrickBuster.java
@@ -20,11 +20,12 @@ public class BrickBuster extends ApplicationAdapter {
 	public static final int HEIGHT = 600;
 	public static final String TITLE = "Brick Buster";
 
-	public static final int SHIELD_HEIGHT = 5;
-
 	public static final Vector2 HORIZONTAL_EDGE = new Vector2(1, 0);
 	public static final Vector2 VERTICAL_EDGE = new Vector2(0, 1);
 
+	public static final int SHIELD_HEIGHT = 5;
+	public static final float POWERUP_CHANCE = 0.15f;
+
 	private static final Map<Class<? extends PowerUp>, Integer> powerUpWeights;
 	private static final int weightSum;
 
@@ -55,7 +56,7 @@ public class BrickBuster extends ApplicationAdapter {
 				int x = 15 + (col * (Brick.BLOCK_WIDTH + 10));
 				int y = 15 + Brick.BLOCK_HEIGHT + (row * (Brick.BLOCK_HEIGHT + 10));
 				Class<? extends PowerUp> powerUpType = null;
-				if (MathUtils.randomBoolean(0.15f)) {
+				if (MathUtils.randomBoolean(POWERUP_CHANCE)) {
 					powerUpType = getWeightedPowerUp();
 				}
 				bricks.add(new Brick(this, powerUpType, x, HEIGHT - y));