diff --git a/twain/twain/huagaods.cpp b/twain/twain/huagaods.cpp
index 277118f..b663dc1 100644
--- a/twain/twain/huagaods.cpp
+++ b/twain/twain/huagaods.cpp
@@ -1863,7 +1863,10 @@ void huagao_ds::init_support_caps(void)
 				count /= 2;
 			}
 			SET_SANE_OPT_EX(ret, scanner_, scan_count, &count);
-			return ret == SCANNER_ERR_OK ? success() : badValue();
+			if (ret == SCANNER_ERR_OK)
+				return success();
+			else
+				return {ReturnCode::Failure, huagao_ds::condition_code_from_hg_error(ret)};
 		}
 		std::vector<int>	count;
 		Int16 tmp_count = 0;