diff --git a/hgdriver/hgdev/hg_scanner.cpp b/hgdriver/hgdev/hg_scanner.cpp
index 99cb52d..105f385 100644
--- a/hgdriver/hgdev/hg_scanner.cpp
+++ b/hgdriver/hgdev/hg_scanner.cpp
@@ -4165,9 +4165,9 @@ int hg_scanner::wait_one_image_from_start(bool& handled)
 	handled = false;
 	if (!async_io_)	// non-callback, async do this in upper level
 	{
+		handled = true;
 		while (is_running() != THREAD_RUNNING_IDLE)
 		{
-			handled = true;
 			if (final_imgs_.size())
 			{
 				break;
@@ -4195,8 +4195,9 @@ int hg_scanner::wait_one_image_from_start(bool& handled)
 		}
 		else if (handled) // overed normal or exception
 		{
+			bool reserveDoubleImg = (double_paper_handle_) ? false : true;
 			if (status_ == SCANNER_ERR_OK
-				|| status_ == SCANNER_ERR_DEVICE_DOUBLE_FEEDING)	// 双张特殊处理，视为成功
+				|| (reserveDoubleImg && status_ == SCANNER_ERR_DEVICE_DOUBLE_FEEDING))	// 双张校验时特殊处理，视为成功
 			{
 				SANE_Bool	has_paper = SANE_FALSE;