diff --git a/build_all.bat b/build_all.bat
index ec0f739..1e8c5dd 100644
--- a/build_all.bat
+++ b/build_all.bat
@@ -217,8 +217,6 @@ EXIT /B 0
 	if %ERRORLEVEL% neq 0 EXIT /B %ERRORLEVEL%
 	call build_ds.bat %1 %2 401C
 	if %ERRORLEVEL% neq 0 EXIT /B %ERRORLEVEL%
-	call build_ds.bat %1 %2 4020
-	if %ERRORLEVEL% neq 0 EXIT /B %ERRORLEVEL%
 	call build_ds.bat %1 %2 4015
 	if %ERRORLEVEL% neq 0 EXIT /B %ERRORLEVEL%
 	call build_ds.bat %1 %2 4019
diff --git a/sane/scanner.cpp b/sane/scanner.cpp
index aea6a83..d48aaac 100644
--- a/sane/scanner.cpp
+++ b/sane/scanner.cpp
@@ -578,11 +578,7 @@ bool scanner::is_belong_serial(int vid, int pid, SCANNERID serial)
 		{
 			if (GET_SCANNER_PID(serial) == 0x401C)
 			{
-				return pid == 0x401C || pid == 0x401D || pid == 0x401E || pid == 0x401F;
-			}			
-			else if (GET_SCANNER_PID(serial) == 0x4020)
-			{
-				return pid == 0x4020 || pid == 0x4021 || pid == 0x4022;
+				return pid == 0x401C || pid == 0x401D || pid == 0x401E || pid == 0x401F|| pid == 0x4021 || pid == 0x4022;
 			}
 			else if (GET_SCANNER_PID(serial) == 0x4015)
 			{