diff --git a/app/src/main/java/com/hencoder/hencoderpracticedraw2/practice/Practice07ColorMatrixColorFilterView.java b/app/src/main/java/com/hencoder/hencoderpracticedraw2/practice/Practice07ColorMatrixColorFilterView.java
index 42fdadd9..1f5c1de1 100644
--- a/app/src/main/java/com/hencoder/hencoderpracticedraw2/practice/Practice07ColorMatrixColorFilterView.java
+++ b/app/src/main/java/com/hencoder/hencoderpracticedraw2/practice/Practice07ColorMatrixColorFilterView.java
@@ -31,7 +31,7 @@ public Practice07ColorMatrixColorFilterView(Context context, @Nullable Attribute
         bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.batman);
 
         // 使用 setColorFilter() 设置一个 ColorMatrixColorFilter
-        // 用 ColorMatrixColorFilter.setSaturation() 把饱和度去掉
+        // 用 ColorMatrix.setSaturation() 把饱和度去掉
     }
 
     @Override