diff --git a/hgdriver/hgdev/hg_scanner_300.cpp b/hgdriver/hgdev/hg_scanner_300.cpp
index d38a2e7..9ac8507 100644
--- a/hgdriver/hgdev/hg_scanner_300.cpp
+++ b/hgdriver/hgdev/hg_scanner_300.cpp
@@ -400,9 +400,9 @@ int hg_scanner_300::writedown_device_configuration(bool type,setting_hardware::H
 	{
 		d->params_3288.isColor = 1;
 	}
-	if (img_conf_.is_autocrop)
+	if (paper_size_ == TwSS::USStatement || paper_size_ == TwSS::MaxSize)
 	{
-		d->params_3288.pageSize = setting3288dsp::G400_AUTO;
+		d->params_3288.pageSize = setting3288dsp::G400_MAXSIZE;
 	}
 	size = papersize.GetPaperSize(TwSS::A4, 200, img_conf_.paperAlign);
 	dsp_config.params_3288.dstHeight = (int)((size.cy + 200) / 100);
diff --git a/hgdriver/hgdev/hg_scanner_400.cpp b/hgdriver/hgdev/hg_scanner_400.cpp
index 274a2cc..99f9e63 100644
--- a/hgdriver/hgdev/hg_scanner_400.cpp
+++ b/hgdriver/hgdev/hg_scanner_400.cpp
@@ -396,9 +396,9 @@ int hg_scanner_400::writedown_device_configuration(bool type,setting_hardware::H
 	{
 			d->params_3288.isColor = 1;
 	}
-	if (paper_size_ == TwSS::None || paper_size_ == TwSS::USStatement)
+	if (paper_size_ == TwSS::USStatement || paper_size_ == TwSS::MaxSize)
 	{
-		d->params_3288.pageSize = setting3288dsp::G400_AUTO;
+		d->params_3288.pageSize = setting3288dsp::G400_MAXSIZE;
 	}
 	size = papersize.GetPaperSize(TwSS::A4, 200, img_conf_.paperAlign);
 	d->params_3288.dstHeight = (int)((size.cy + 200) / 100); //非安卓可不需要