diff --git a/app/src/main/java/com/hippo/effect/ripple/RippleOldBackground.java b/app/src/main/java/com/hippo/effect/ripple/RippleBackground.java
similarity index 98%
rename from app/src/main/java/com/hippo/effect/ripple/RippleOldBackground.java
rename to app/src/main/java/com/hippo/effect/ripple/RippleBackground.java
index 6e9a3923c..61e0f52e7 100644
--- a/app/src/main/java/com/hippo/effect/ripple/RippleOldBackground.java
+++ b/app/src/main/java/com/hippo/effect/ripple/RippleBackground.java
@@ -31,7 +31,7 @@ import com.nineoldandroids.animation.ObjectAnimator;
 /**
  * Draws a Material ripple.
  */
-class RippleOldBackground {
+class RippleBackground {
     private static final Interpolator LINEAR_INTERPOLATOR = new LinearInterpolator();
 
     private static final float GLOBAL_SPEED = 1.0f;
@@ -73,7 +73,7 @@ class RippleOldBackground {
     /**
      * Creates a new ripple.
      */
-    public RippleOldBackground(RippleOwner owner, Rect bounds) {
+    public RippleBackground(RippleOwner owner, Rect bounds) {
         mOwner = owner;
         mBounds = bounds;
     }
@@ -228,7 +228,7 @@ class RippleOldBackground {
                     @Override
                     public void onAnimationEnd(Animator animation) {
                         final ObjectAnimator outerFadeOutAnim = ObjectAnimator.ofFloat(
-                                RippleOldBackground.this, "outerOpacity", 0);
+                                RippleBackground.this, "outerOpacity", 0);
                         outerFadeOutAnim.setAutoCancel(true);
                         outerFadeOutAnim.setDuration(outerDuration);
                         outerFadeOutAnim.setInterpolator(LINEAR_INTERPOLATOR);
diff --git a/app/src/main/java/com/hippo/effect/ripple/RippleOldDrawable.java b/app/src/main/java/com/hippo/effect/ripple/RippleOldDrawable.java
index e62b856b9..ed7a77a5a 100644
--- a/app/src/main/java/com/hippo/effect/ripple/RippleOldDrawable.java
+++ b/app/src/main/java/com/hippo/effect/ripple/RippleOldDrawable.java
@@ -87,7 +87,7 @@ public class RippleOldDrawable extends Drawable implements RippleOwner, Hotspota
     private final Rect mHotspotBounds = new Rect();
 
     /** The current background. May be actively animating or pending entry. */
-    private RippleOldBackground mBackground;
+    private RippleBackground mBackground;
 
     /** Whether we expect to draw a background when visible. */
     private boolean mBackgroundActive;
@@ -312,7 +312,7 @@ public class RippleOldDrawable extends Drawable implements RippleOwner, Hotspota
      */
     private void tryBackgroundEnter() {
         if (mBackground == null) {
-            mBackground = new RippleOldBackground(this, mHotspotBounds);
+            mBackground = new RippleBackground(this, mHotspotBounds);
         }
 
         final int color = mColor.getColorForState(getState(), Color.TRANSPARENT);