diff --git a/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/view/widgets/minigames/games/ClickerGame.java b/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/view/widgets/minigames/games/ClickerGame.java
index f2d9f06..b7fd9d7 100644
--- a/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/view/widgets/minigames/games/ClickerGame.java
+++ b/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/view/widgets/minigames/games/ClickerGame.java
@@ -25,6 +25,11 @@ public final class ClickerGame
    * */
   private int clickValue;
 
+  /**
+   * Local reference to current score.
+   */
+  private int score;
+
   /**
    * The current cost of upgrading the amount gained per click.
    * */
@@ -71,17 +76,22 @@ public Node getCanvasNode() {
 
   @Override
   public void initialize(final IntConsumer scoreModifier) {
-
-    clickBtn.setOnAction(e -> scoreModifier.accept(clickValue));
+    score = 0;
+    clickBtn.setOnAction(e ->  {
+      scoreModifier.accept(clickValue);
+      score += clickValue;
+    });
 
     upgradeBtn.setOnAction(e -> {
-      // TODO: Change validation to only upgrade if enough score.
       scoreModifier.accept(-upgradeCost);
-      clickValue += 1;
-      upgradeCost *= 2;
-      clickBtn.setText("+" + clickValue);
-      upgradeBtn.setText("+" + clickValue + " per click\n-"
-              + upgradeCost + " points");
+      if (upgradeCost <= score) {
+        score -= upgradeCost;
+        clickValue += 1;
+        upgradeCost *= 2;
+        clickBtn.setText("+" + clickValue);
+        upgradeBtn.setText("+1 per click\n-"
+                + upgradeCost + " points");
+      }
     });
   }