diff --git a/twain/twain/huagaods.cpp b/twain/twain/huagaods.cpp
index 83139e3..517f343 100644
--- a/twain/twain/huagaods.cpp
+++ b/twain/twain/huagaods.cpp
@@ -1170,6 +1170,7 @@ Twpp::Result huagao_ds::imageFileXferGet(const Twpp::Identity& origin)
 			SANE_ImageFormatConvert	conv;
 			std::string				target(m_fileXfer.filePath().string().c_str());
 
+			memset(&conv, 0, sizeof(conv));
 			file = target + ".src";
 			conv.src.fmt.img_format = SANE_IMAGE_TYPE_BMP;
 			conv.src.is_file = SANE_TRUE;