diff --git a/src/com/bytezone/diskbrowser/disk/DiskFactory.java b/src/com/bytezone/diskbrowser/disk/DiskFactory.java
index 365d6e3..519fe87 100755
--- a/src/com/bytezone/diskbrowser/disk/DiskFactory.java
+++ b/src/com/bytezone/diskbrowser/disk/DiskFactory.java
@@ -395,14 +395,7 @@ public class DiskFactory
     }
 
     AppleDisk appleDisk256 = new AppleDisk (file, 35, 16);
-    AppleDisk appleDisk512;
-
-    //    if (nuFX != null)
-    //      appleDisk512 = new AppleDisk (file, 35, 8, nuFX);
-    //    else if (binary2 != null)
-    //      appleDisk512 = new AppleDisk (file, 35, 8, binary2);
-    //    else
-    appleDisk512 = new AppleDisk (file, 35, 8);
+    AppleDisk appleDisk512 = new AppleDisk (file, 35, 8);
 
     if (true)
     {
diff --git a/src/com/bytezone/diskbrowser/duplicates/DisksWindow.java b/src/com/bytezone/diskbrowser/duplicates/DisksWindow.java
index aa94a27..a857dd1 100644
--- a/src/com/bytezone/diskbrowser/duplicates/DisksWindow.java
+++ b/src/com/bytezone/diskbrowser/duplicates/DisksWindow.java
@@ -188,11 +188,11 @@ public class DisksWindow extends JFrame
       }
     });
 
-    for (int i = 0; i < Utility.suffixes.size (); i++)
+    for (int i = 0; i < Utility.getTotalSuffixes (); i++)
     {
       int total = rootFolderData.getTotalType (i);
       JCheckBox btn =
-          new JCheckBox (String.format ("%s (%,d)", Utility.suffixes.get (i), total));
+          new JCheckBox (String.format ("%s (%,d)", Utility.getSuffix (i), total));
       topPanel.add (btn);
       boxes.add (btn);
 
diff --git a/src/com/bytezone/diskbrowser/duplicates/RootFolderData.java b/src/com/bytezone/diskbrowser/duplicates/RootFolderData.java
index d9a8943..3bdb5f2 100644
--- a/src/com/bytezone/diskbrowser/duplicates/RootFolderData.java
+++ b/src/com/bytezone/diskbrowser/duplicates/RootFolderData.java
@@ -154,7 +154,7 @@ public class RootFolderData implements RootDirectoryChangeListener
   private void clear ()
   // ---------------------------------------------------------------------------------//
   {
-    typeTotals = new int[4][Utility.suffixes.size ()];
+    typeTotals = new int[4][Utility.getTotalSuffixes ()];
     totalDisks = 0;
     totalFolders = 0;
 
@@ -256,7 +256,7 @@ public class RootFolderData implements RootDirectoryChangeListener
     System.out.println (line);
     for (int i = 0; i < typeTotals[0].length; i++)
     {
-      System.out.printf ("%14.14s  ", Utility.suffixes.get (i) + " ...........");
+      System.out.printf ("%14.14s  ", Utility.getSuffix (i) + " ...........");
       for (int j = 0; j < typeTotals.length; j++)
       {
         System.out.printf ("%,7d  ", typeTotals[j][i]);
@@ -328,7 +328,7 @@ public class RootFolderData implements RootDirectoryChangeListener
       for (int i = 0; i < typeTotals[0].length; i++)
       {
         line = String.format ("%14.14s  %,7d  %,7d  %,7d  %,7d",
-            Utility.suffixes.get (i) + " ...........", typeTotals[0][i], typeTotals[1][i],
+            Utility.getSuffix (i) + " ...........", typeTotals[0][i], typeTotals[1][i],
             typeTotals[2][i], typeTotals[3][i]);
         g.drawString (line, x, y);
         for (int j = 0; j < typeTotals.length; j++)
diff --git a/src/com/bytezone/diskbrowser/utilities/Utility.java b/src/com/bytezone/diskbrowser/utilities/Utility.java
index 7367ecd..4e5596a 100644
--- a/src/com/bytezone/diskbrowser/utilities/Utility.java
+++ b/src/com/bytezone/diskbrowser/utilities/Utility.java
@@ -14,7 +14,7 @@ import java.util.zip.CRC32;
 import java.util.zip.Checksum;
 
 // -----------------------------------------------------------------------------------//
-public class Utility
+public final class Utility
 // -----------------------------------------------------------------------------------//
 {
   public static final byte ASCII_BACKSPACE = 0x08;
@@ -33,9 +33,30 @@ public class Utility
   public static final byte ASCII_EQUALS = 0x3D;
   public static final byte ASCII_CARET = 0x5E;
 
-  public static final List<String> suffixes = Arrays.asList ("po", "dsk", "do", "hdv",
+  private static final List<String> suffixes = Arrays.asList ("po", "dsk", "do", "hdv",
       "2mg", "v2d", "d13", "sdk", "shk", "bxy", "bny", "woz", "img", "dimg");
 
+  // ---------------------------------------------------------------------------------//
+  private Utility ()
+  // ---------------------------------------------------------------------------------//
+  {
+
+  }
+
+  // ---------------------------------------------------------------------------------//
+  public static int getTotalSuffixes ()
+  // ---------------------------------------------------------------------------------//
+  {
+    return suffixes.size ();
+  }
+
+  // ---------------------------------------------------------------------------------//
+  public static String getSuffix (int index)
+  // ---------------------------------------------------------------------------------//
+  {
+    return suffixes.get (index);
+  }
+
   // ---------------------------------------------------------------------------------//
   public static boolean test (Graphics2D g)
   // ---------------------------------------------------------------------------------//