diff --git a/hgdriver/hgdev/hg_scanner.cpp b/hgdriver/hgdev/hg_scanner.cpp
index 2783a37..98dc0bc 100644
--- a/hgdriver/hgdev/hg_scanner.cpp
+++ b/hgdriver/hgdev/hg_scanner.cpp
@@ -390,6 +390,9 @@ void hg_scanner::set_setting_map(int sn, const char* name)
 		setting_map_[sn] = &hg_scanner::setting_set_isremove_low_hole;
 	else if (val == SANE_STD_OPT_NAME_SEARCH_HOLE_RANGE_B)
 		setting_map_[sn] = &hg_scanner::setting_set_isremove_low_hole_threshold;
+	else if (val == SANE_STD_OPT_NAME_SEARCH_HOLE_RANGE_B)
+	setting_map_[sn] = &hg_scanner::setting_set_fold_type;
+		
 }
 void hg_scanner::thread_handle_usb(void)
 {
@@ -2166,7 +2169,7 @@ int hg_scanner::setting_set_isremove_low_hole_threshold(int sn, void* data)
 	isremove_low_hole_threshold = *((double*)data);
 	return SCANNER_ERR_OK;
 }
-int setting_set_fold_type(int sn, void* data)
+int hg_scanner::setting_set_fold_type(int sn, void* data)
 {
 	string str((char*)data);
 	bool exact = NULL;