diff --git a/sane/DlgPage.cpp b/sane/DlgPage.cpp
index 40b461d..6d688cb 100644
--- a/sane/DlgPage.cpp
+++ b/sane/DlgPage.cpp
@@ -646,7 +646,7 @@ HWND dlg_page::create_control_int(int sn, const SANE_Option_Descriptor* desc, vo
 	}
 	else
 	{
-		int lower = 0, upper = 100;
+		int lower = 0, upper = 10000;
 		if (desc->constraint_type == SANE_CONSTRAINT_RANGE)
 		{
 			lower = desc->constraint.range->min;