diff --git a/simplecropview-sample/src/main/java/com/example/simplecropviewsample/MainFragment.java b/simplecropview-sample/src/main/java/com/example/simplecropviewsample/MainFragment.java
index f441d05..9425643 100644
--- a/simplecropview-sample/src/main/java/com/example/simplecropviewsample/MainFragment.java
+++ b/simplecropview-sample/src/main/java/com/example/simplecropviewsample/MainFragment.java
@@ -55,9 +55,10 @@ public void onViewCreated(View view, Bundle savedInstanceState) {
         bindViews(view);
         // apply custom font
         FontUtils.setFont(mRootLayout);
+
+//            mCropView.setDebug(true);
         // set bitmap to CropImageView
         if (mCropView.getImageBitmap() == null) {
-            mCropView.setDebug(true);
             mCropView.setImageResource(R.drawable.sample5);
         }
     }
diff --git a/simplecropview/src/main/java/com/isseiaoki/simplecropview/CropImageView.java b/simplecropview/src/main/java/com/isseiaoki/simplecropview/CropImageView.java
index 6be6106..0582a4f 100644
--- a/simplecropview/src/main/java/com/isseiaoki/simplecropview/CropImageView.java
+++ b/simplecropview/src/main/java/com/isseiaoki/simplecropview/CropImageView.java
@@ -1917,6 +1917,7 @@ public void setInterpolator(Interpolator interpolator) {
      */
     public void setDebug(boolean debug) {
         mIsDebug = debug;
+        invalidate();
     }
 
     /**