diff --git a/source/sprites/Enemy.h b/source/sprites/Enemy.h
index 8b56c03..7b4e149 100644
--- a/source/sprites/Enemy.h
+++ b/source/sprites/Enemy.h
@@ -18,7 +18,7 @@ public:
 			const sf::Vector2f& position);
 
 private:
-	virtual void onThink(int elapsed);
+	virtual void onThink(int elapsed) override;
 };
 
 #endif /* DG_ENEMY_H_ */
diff --git a/source/sprites/Player.h b/source/sprites/Player.h
index ffc4e35..fc4aee1 100644
--- a/source/sprites/Player.h
+++ b/source/sprites/Player.h
@@ -41,7 +41,7 @@ public:
 	using Character::reload;
 
 private:
-	void onThink(int elapsed);
+	void onThink(int elapsed) override;
 
 private:
 	sf::Vector2f mCrosshairPosition; //< Relative position of the point to fire at (mouse cursor).