diff --git a/ROMVault2/DatReaders/DatCmpReader.cs b/ROMVault2/DatReaders/DatCmpReader.cs
index 35f1b38..62718da 100644
--- a/ROMVault2/DatReaders/DatCmpReader.cs
+++ b/ROMVault2/DatReaders/DatCmpReader.cs
@@ -142,6 +142,8 @@ namespace ROMVault2.DatReaders
             }
 
             thisFileType = forceZipping.ToLower() != "no" ? FileType.ZipFile : FileType.File;
+            if (Settings.FixLevel == eFixLevel.Uncompressed)
+                thisFileType = FileType.File;
             tDir.Dat = tDat;
             return true;
 
diff --git a/ROMVault2/DatReaders/DatDOSReader.cs b/ROMVault2/DatReaders/DatDOSReader.cs
index c094b09..4e6c929 100644
--- a/ROMVault2/DatReaders/DatDOSReader.cs
+++ b/ROMVault2/DatReaders/DatDOSReader.cs
@@ -97,7 +97,7 @@ namespace ROMVault2.DatReaders
                 }
             }
 
-            thisFileType = FileType.ZipFile;
+            thisFileType = Settings.FixLevel == eFixLevel.Uncompressed ? FileType.File : FileType.ZipFile;
             tDir.Dat = tDat;
             return true;
 
diff --git a/ROMVault2/DatReaders/DatMessXMLReader.cs b/ROMVault2/DatReaders/DatMessXMLReader.cs
index ba68f76..fc8b475 100644
--- a/ROMVault2/DatReaders/DatMessXMLReader.cs
+++ b/ROMVault2/DatReaders/DatMessXMLReader.cs
@@ -81,6 +81,8 @@ namespace ROMVault2.DatReaders
                     thisFileType = FileType.ZipFile;
                     break;
             }
+            if (Settings.FixLevel == eFixLevel.Uncompressed)
+                thisFileType = FileType.File;
 
             tDir.Dat = tDat;
             return true;
diff --git a/ROMVault2/DatReaders/DatXMLReader.cs b/ROMVault2/DatReaders/DatXMLReader.cs
index d3a3106..f290b47 100644
--- a/ROMVault2/DatReaders/DatXMLReader.cs
+++ b/ROMVault2/DatReaders/DatXMLReader.cs
@@ -165,6 +165,8 @@ namespace ROMVault2.DatReaders
             // Look for: <notzipped>true</notzipped>
             string notzipped = VarFix.String(head.SelectSingleNode("notzipped"));
             if (notzipped.ToLower() == "true" || notzipped.ToLower() == "yes") thisFileType = FileType.File;
+            if (Settings.FixLevel == eFixLevel.Uncompressed)
+                thisFileType = FileType.File;
 
             tDir.Dat = tDat;
             return true;
diff --git a/ROMVault2/FrmMain.cs b/ROMVault2/FrmMain.cs
index 751be8d..24a51a8 100644
--- a/ROMVault2/FrmMain.cs
+++ b/ROMVault2/FrmMain.cs
@@ -1461,6 +1461,7 @@ namespace ROMVault2
         private void SettingsToolStripMenuItemClick(object sender, EventArgs e)
         {
             FrmSettings fcfg = new FrmSettings();
+            fcfg.UpdateDats += UpdateDats;
             fcfg.ShowDialog(this);
             fcfg.Dispose();
         }
diff --git a/ROMVault2/FrmSettings.cs b/ROMVault2/FrmSettings.cs
index 37ed2f4..30bb535 100644
--- a/ROMVault2/FrmSettings.cs
+++ b/ROMVault2/FrmSettings.cs
@@ -8,11 +8,17 @@ using System;
 using System.Collections.Generic;
 using System.Windows.Forms;
 using ROMVault2.Properties;
+using System.IO;
+using ROMVault2.RvDB;
 
 namespace ROMVault2
 {
     public partial class FrmSettings : Form
     {
+        public delegate void UpdateDatsDelegate();
+
+        public event UpdateDatsDelegate UpdateDats;
+
         public FrmSettings()
         {
             InitializeComponent();
@@ -29,6 +35,7 @@ namespace ROMVault2
             cboFixLevel.Items.Add("Level1");
             cboFixLevel.Items.Add("Level2");
             cboFixLevel.Items.Add("Level3");
+            cboFixLevel.Items.Add("Uncompressed");
         }
 
         private void FrmConfigLoad(object sender, EventArgs e)
@@ -54,6 +61,26 @@ namespace ROMVault2
 
         private void BtnOkClick(object sender, EventArgs e)
         {
+            if (Settings.FixLevel != (eFixLevel)cboFixLevel.SelectedIndex)
+            {
+                if (Settings.FixLevel == eFixLevel.Uncompressed ||
+                   (eFixLevel)cboFixLevel.SelectedIndex == eFixLevel.Uncompressed)
+                {
+                    DialogResult dlg = MessageBox.Show("Changing from/to uncompressed requires the cache file to be deleted.\nDo you want to proceed?", "Settings", MessageBoxButtons.YesNoCancel);
+
+                    if (dlg == DialogResult.Cancel)
+                        Close();
+
+                    if (dlg != DialogResult.Yes)
+                        return;
+
+                    File.Delete(Settings.CacheFile);
+                    DB.Read(sender, new System.ComponentModel.DoWorkEventArgs(null));
+                    Settings.FixLevel = (eFixLevel)cboFixLevel.SelectedIndex;
+                    UpdateDats();
+                }
+            }
+
             Settings.DatRoot = lblDATRoot.Text;
             Settings.ScanLevel = (eScanLevel)cboScanLevel.SelectedIndex;
             Settings.FixLevel = (eFixLevel)cboFixLevel.SelectedIndex;
diff --git a/ROMVault2/Settings.cs b/ROMVault2/Settings.cs
index 41fc10a..0e7abb4 100644
--- a/ROMVault2/Settings.cs
+++ b/ROMVault2/Settings.cs
@@ -28,7 +28,8 @@ namespace ROMVault2
         TrrntZipLevel3,
         Level1,
         Level2,
-        Level3
+        Level3,
+        Uncompressed
     }
 
     public static class Settings