diff --git a/src/main/java/com/pragone/jphash/image/SimpleGrayscaleImage.java b/src/main/java/com/pragone/jphash/image/SimpleGrayscaleImage.java
index 7444274..e201303 100644
--- a/src/main/java/com/pragone/jphash/image/SimpleGrayscaleImage.java
+++ b/src/main/java/com/pragone/jphash/image/SimpleGrayscaleImage.java
@@ -1,6 +1,5 @@
 package com.pragone.jphash.image;
 
-import sun.jvm.hotspot.debugger.Debugger;
 import sun.misc.Cleaner;
 
 import javax.imageio.ImageIO;
@@ -260,4 +259,4 @@ public int get(int x, int y) {
         return this.data.get(width*y + x) & 0xFF;
     }
 
-}
\ No newline at end of file
+}