diff --git a/win/setup/scanner/DeliScan2_App_Setup.iss b/win/setup/scanner/DeliScan2_App_Setup.iss
index c3a3d45..8ddc099 100644
--- a/win/setup/scanner/DeliScan2_App_Setup.iss
+++ b/win/setup/scanner/DeliScan2_App_Setup.iss
@@ -156,13 +156,11 @@ Source: "..\..\x86\Release\DLImgProc.dll"; DestDir: "{win}\twain_32\DeliTwain\";
 Source: "..\..\x86\Release\DLVersion.dll"; DestDir: "{win}\twain_32\DeliTwain\"; Flags: ignoreversion; Check: Is64BitInstallMode
 Source: "..\..\x86\Release\tessdata\*"; DestDir: "{win}\twain_32\DeliTwain\tessdata\"; Flags: ignoreversion; Check: Is64BitInstallMode
 Source: "..\..\x86\OEM\deli\delitwain401C.ds"; DestDir: "{win}\twain_32\DeliTwain\"; Flags: ignoreversion;  Components: TwainS3000;
-Source: "..\..\x86\OEM\deli\delitwain4020.ds"; DestDir: "{win}\twain_32\DeliTwain\"; Flags: ignoreversion;  Components: TwainS3000;
 Source: "..\..\x86\OEM\deli\delitwain4015.ds"; DestDir: "{win}\twain_32\DeliTwain\"; Flags: ignoreversion;  Components: TwainS2000;
 Source: "..\..\x86\OEM\deli\delitwain4019.ds"; DestDir: "{win}\twain_32\DeliTwain\"; Flags: ignoreversion;  Components: TwainDL9000;
 
 ; twain64
 Source: "..\..\x64\OEM\deli\delitwain401C.ds"; DestDir: "{win}\twain_64\DeliTwain\"; Flags: ignoreversion;  Components: TwainS3000;  Check: Is64BitInstallMode
-Source: "..\..\x64\OEM\deli\delitwain4020.ds"; DestDir: "{win}\twain_64\DeliTwain\"; Flags: ignoreversion;  Components: TwainS3000;  Check: Is64BitInstallMode
 Source: "..\..\x64\OEM\deli\delitwain4015.ds"; DestDir: "{win}\twain_64\DeliTwain\"; Flags: ignoreversion;  Components: TwainS2000;  Check: Is64BitInstallMode
 Source: "..\..\x64\OEM\deli\delitwain4019.ds"; DestDir: "{win}\twain_64\DeliTwain\"; Flags: ignoreversion;  Components: TwainDL9000;  Check: Is64BitInstallMode