diff --git a/app/src/main/java/com/zcshou/joystick/RockerView.java b/app/src/main/java/com/zcshou/joystick/RockerView.java
index 21707eb9..e75ed8d7 100644
--- a/app/src/main/java/com/zcshou/joystick/RockerView.java
+++ b/app/src/main/java/com/zcshou/joystick/RockerView.java
@@ -29,7 +29,7 @@ public class RockerView extends View {
     private float innerCenterY;
     /** view中心点x坐标 */
     private float viewCenterX;
-    /** view中心点y左边 */
+    /** view中心点y坐标 */
     private float viewCenterY;
     /** 外圆半径 */
     private int outerCircleRadius;