diff --git a/hgdriver/hgdev/hg_scanner_300.cpp b/hgdriver/hgdev/hg_scanner_300.cpp
index d84a241..d483924 100644
--- a/hgdriver/hgdev/hg_scanner_300.cpp
+++ b/hgdriver/hgdev/hg_scanner_300.cpp
@@ -669,6 +669,10 @@ int hg_scanner_300::writedown_device_configuration(bool type,setting_hardware::H
 	{
 		//d->params_3288.pageSize = setting3288dsp::G400_MAXSIZE;
 	}
+	if (paper_size_ == TwSS::None || paper_size_ == TwSS::USStatement || paper_size_ == TwSS::MaxSize || paper_size_ == TwSS::Trigeminy)
+	{
+		d->params_3288.enableSizeDetect = false;
+	}
 
 	if ((is_quality_ == IMG_SPEED) && (resolution_ >= 300))
 	{