diff --git a/src/main/java/com/example/tankbattle/ResourceMgr.java b/src/main/java/com/example/tankbattle/ResourceMgr.java
index 371d48f..a527248 100644
--- a/src/main/java/com/example/tankbattle/ResourceMgr.java
+++ b/src/main/java/com/example/tankbattle/ResourceMgr.java
@@ -23,7 +23,4 @@ public class ResourceMgr {
             exception.printStackTrace();
         }
     }
-
-    public ResourceMgr() {
-    }
 }
diff --git a/src/main/java/com/example/tankbattle/Tank.java b/src/main/java/com/example/tankbattle/Tank.java
index f1927d2..07fb1fe 100644
--- a/src/main/java/com/example/tankbattle/Tank.java
+++ b/src/main/java/com/example/tankbattle/Tank.java
@@ -82,8 +82,8 @@ public class Tank {
     }
 
     public void fire(){
-        int bX = this.x + Tank.WIDTH >> 1 - Bullet.WIDTH >> 1;
-        int bY = this.y + Tank.HEIGHT >> 1 - Bullet.HEIGHT >> 1;
+        int bX = this.x + Tank.WIDTH / 2 - Bullet.WIDTH / 2;
+        int bY = this.y + Tank.HEIGHT / 2 - Bullet.HEIGHT / 2;
         tf.bullets.add(new Bullet(bX, bY, this.dir, this.tf));
     }
 }