diff --git a/twain/twain/huagaods.cpp b/twain/twain/huagaods.cpp
index 23e36e5..a755253 100644
--- a/twain/twain/huagaods.cpp
+++ b/twain/twain/huagaods.cpp
@@ -721,6 +721,8 @@ struct
 }g_enhance[] = { {Filter::Red, ENHANCE_RED}, {Filter::Green, ENHANCE_GREEN}, {Filter::Blue, ENHANCE_BLUE}, {Filter::None, ENHANCE_NONE} };
 Filter from_sane_enhance(int sane)
 {
+	return (Filter)sane;
+
 	for (int i = 0; i < _countof(g_filter); ++i)
 	{
 		if (g_filter[i].sane == sane)
@@ -731,6 +733,8 @@ Filter from_sane_enhance(int sane)
 }
 int to_sane_enhance(Filter twain)
 {
+	return (int)twain;
+
 	for (int i = 0; i < _countof(g_filter); ++i)
 	{
 		if (g_filter[i].twain == twain)
@@ -3201,19 +3205,19 @@ void huagao_ds::init_support_caps(void)
 			if (Msg::Set == msg || Msg::Reset == msg) {
 				if (Msg::Set == msg)
 					def = data.currentItem<UInt32>();
-				int ret = SCANNER_ERR_OK;
-				SET_SANE_OPT_EX(ret, scanner_, ex_color_enhance, &def);
+				int ret = SCANNER_ERR_OK, val = to_sane_enhance((Filter)def);;
+				SET_SANE_OPT_EX(ret, scanner_, ex_color_enhance, &val);
 				return ret == SCANNER_ERR_OK ? success() : badValue();
 			}
 
-			std::list<Filter>	vs;
-			Filter				now = from_sane_filter(cur), init = from_sane_filter(def);
+			std::list<UInt32>	vs;
+			UInt32				now = (UInt32)from_sane_enhance(cur), init = (UInt32)from_sane_enhance(def);
 			UInt32				curInd = distance<int>(vals, cur), defInd = distance<int>(vals, def);
 
 			for (size_t i = sane_opts::RANGE_POS_ENUM_BEGIN; i < vals.size(); ++i)
-				vs.push_back(from_sane_filter(vals[i]));
+				vs.push_back((UInt32)from_sane_enhance(vals[i]));
 			UInt32 val = (UInt32)now;
-			return CapSupGetAllResetEx<UInt32, Filter, (CapType)CapTypeEx::CAP_TYPE_EX_ENHANCE_COLOR>(msg, data, vs, val, init, curInd, defInd);
+			return CapSupGetAllResetEx<UInt32, UInt32, (CapType)CapTypeEx::CAP_TYPE_EX_ENHANCE_COLOR>(msg, data, vs, val, init, curInd, defInd);
 		};
 	}