diff --git a/sane/scanner.cpp b/sane/scanner.cpp
index 4792d4d..90df8ae 100644
--- a/sane/scanner.cpp
+++ b/sane/scanner.cpp
@@ -361,9 +361,13 @@ namespace callback
 	{
 		std::string	root(hg_sane_middleware::sane_path());
 
+		if (hui)
+			FreeLibrary(hui);
+
 		root += OEM_SHORT_NAME_E;
 		root += "TwainUI.dll";
-		hui = LoadLibraryExA(root.c_str(), NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
+		// hui = LoadLibraryExA(root.c_str(), NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
+		hui = LoadLibraryA(root.c_str());
 		if (!hui)
 		{
 			std::wstring	info(L"Load '" + local_trans::a2u(root.c_str(), CP_UTF8));