diff --git a/sane/scanned_img.cpp b/sane/scanned_img.cpp
index 7cd6d3f..8a11140 100644
--- a/sane/scanned_img.cpp
+++ b/sane/scanned_img.cpp
@@ -498,7 +498,7 @@ std::string scanned_img::file_header(SANE_ImageType type, float resolution, twai
 		{
 			BITMAPFILEHEADER	fh = { 0 };
 			fh.bfType = MAKEWORD('B', 'M');
-			fh.bfSize = sizeof(fh) + bih.biSizeImage + sizeof(bih);
+			fh.bfSize = sizeof(fh) + bih.biSizeImage + sizeof(bih) + pal_size;
 			fh.bfOffBits = sizeof(fh) + sizeof(bih) + pal_size;
 
 			h = std::string((char*)&fh, sizeof(fh));
diff --git a/twain/twain/huagaods.cpp b/twain/twain/huagaods.cpp
index 9d957c6..4ca5539 100644
--- a/twain/twain/huagaods.cpp
+++ b/twain/twain/huagaods.cpp
@@ -1110,7 +1110,7 @@ Twpp::Result huagao_ds::pendingXfersStopFeeder(const Identity& origin, PendingXf
 Twpp::Result huagao_ds::imageFileXferGet(const Twpp::Identity& origin)
 {
 	// assume that the file format has set before start-scanning, so we write-down the image content to file directly here ...
-	if (!scanner_.get() || scanner_->get_scanned_images() == 0)
+	if (!scanner_.get() || scanner_->get_scanned_images(-1) == 0)
 		return seqError();
 
 	IScanImg		*img = scanner_->take_first_image(TWAIN_XFER_File);
@@ -1177,7 +1177,7 @@ Twpp::Result huagao_ds::imageFileXferGet(const Twpp::Identity& origin)
 			conv.dst.data_len = target.length();
 			MoveFileA(target.c_str(), file.c_str());
 			if(scanner_->convert_image(&conv) != SCANNER_ERR_OK)
-				ret = { ReturnCode::Failure, ConditionCode::FileWriteError };
+				ret = { ReturnCode::Failure, ConditionCode::OperationError };
 			DeleteFileA(file.c_str());
 		}
 	}