diff --git a/sane/scanner.cpp b/sane/scanner.cpp
index 80b9063..bfa10a5 100644
--- a/sane/scanner.cpp
+++ b/sane/scanner.cpp
@@ -3242,6 +3242,7 @@ COM_API_IMPLEMENT(scanner, void, ui_hide(void))
 
 	if (callback::close_ui)
 		callback::close_ui(UI_INDICATOR | UI_SETTING | UI_MSG_BOX);
+	is_show_setting_ = false;
 }
 COM_API_IMPLEMENT(scanner, bool, ui_is_ok(void))
 {