diff --git a/twain/twain/huagaods.cpp b/twain/twain/huagaods.cpp
index 9c3584b..33c10a1 100644
--- a/twain/twain/huagaods.cpp
+++ b/twain/twain/huagaods.cpp
@@ -3664,14 +3664,14 @@ std::wstring huagao_ds::get_config_value(const wchar_t* sec, const wchar_t* key)
 
 	return v;
 }
-DWORD huagao_ds::get_config_number(const wchar_t* sec, const wchar_t* key)
+DWORD huagao_ds::get_config_number(const wchar_t* sec, const wchar_t* key, DWORD def, DWORD empty)
 {
 	std::wstring cfg_f(get_config_file());
 
 	if (cfg_f.empty())
-		return 0;
+		return empty;
 	else
-		return GetPrivateProfileIntW(sec, key, 0, get_config_file().c_str());
+		return GetPrivateProfileIntW(sec, key, def, get_config_file().c_str());
 }
 int huagao_ds::handle_scanner_event(int ev, bool from_event_proc)
 {