diff --git a/sane/scanner.cpp b/sane/scanner.cpp
index de50b3c..aeaf16d 100644
--- a/sane/scanner.cpp
+++ b/sane/scanner.cpp
@@ -469,13 +469,14 @@ int scanner::open(void)
 	ret = hg_sane_middleware::instance()->open_device(name.c_str(), &handle_);
 	if (ret == SANE_STATUS_GOOD)
 	{
-		size_t	pid = scanner_name_.find(L" - ");
-		if (pid == -1)
-			pid = scanner_name_.length();
+		size_t	pid = -1;
 
 		transport_config_file();
 		callback::reg_callback(handle_, this);
 		scanner_name_ = local_trans::a2u(name.c_str(), CP_UTF8);
+		pid = scanner_name_.find(L" - ");
+		if (pid == -1)
+			pid = scanner_name_.length();
 		ret = init_options_id();
 		load_config((cfg_path_ + scanner_name_.substr(0, pid) + L".cfg").c_str());
 		apply_config();