diff --git a/app_language.cpp b/app_language.cpp
index aec6cb6..16b9ed1 100644
--- a/app_language.cpp
+++ b/app_language.cpp
@@ -552,6 +552,7 @@ class lang_mgr
 	}
 	~lang_mgr()
 	{
+		clear();
 		delete[](char*)all_;
 	}
 
@@ -593,8 +594,6 @@ public:
 
 		return cp;
 	}
-
-public:
 	static lang_mgr* instance(void)
 	{
 		if (!lang_mgr::inst_)
@@ -602,6 +601,16 @@ public:
 
 		return lang_mgr::inst_;
 	}
+	static void destroy(void)
+	{
+		if (lang_mgr::inst_)
+		{
+			delete lang_mgr::inst_;
+			lang_mgr::inst_ = nullptr;
+		}
+	}
+
+public:
 	int get_cur_cp(void)
 	{
 		return cur_cp_;
@@ -764,6 +773,11 @@ public:
 };
 lang_mgr* lang_mgr::inst_ = nullptr;
 
+void clear_language_data(void)
+{
+	lang_mgr::destroy();
+}
+
 extern "C"
 {
 	int lang_initialize(void* param)