diff --git a/LunaHook/engine32/Elf.cpp b/LunaHook/engine32/Elf.cpp
index f25aeff..3ad9132 100644
--- a/LunaHook/engine32/Elf.cpp
+++ b/LunaHook/engine32/Elf.cpp
@@ -334,6 +334,7 @@ namespace{
 //flutter of birds～鳥達の羽ばたき～
 //https://vndb.org/v2379
 //需要注意的是，不能把文本跳到最快，不然2~4行无法显示。
+//这个有一大堆候选
   bool elf3(){
     bool succ=false;
     BYTE sig[]={
diff --git a/LunaHook/engine32/Elf.h b/LunaHook/engine32/Elf.h
index 6560a8d..2c2a580 100644
--- a/LunaHook/engine32/Elf.h
+++ b/LunaHook/engine32/Elf.h
@@ -3,9 +3,14 @@
 class Elf:public ENGINE{
     public:
     Elf(){
-        
-        check_by=CHECK_BY::FILE_ALL;
-        check_by_target=check_by_list{L"data.arc",L"effect.arc",L"mes.arc"};
+        check_by=CHECK_BY::CUSTOM;
+        check_by_target=[](){
+            //flutter of birds～鳥達の羽ばたき～
+            //https://vndb.org/v2379
+            //很奇怪，FindFirstFileW在win7上true，在win11上false，但PathFileExists在两者都是true
+            auto paks={L"data.arc",L"effect.arc",L"mes.arc"};
+            return  std::all_of(paks.begin(),paks.end(),[](auto f){return Util::CheckFile_exits(f,true);}) ;
+        };
         //Util::CheckFile(L"Silkys.exe") ||    // It might or might not have Silkys.exe
       // data, effect, layer, mes, music
     }; 
diff --git a/LunaHook/util/util.cc b/LunaHook/util/util.cc
index 891f012..d0b3d5a 100644
--- a/LunaHook/util/util.cc
+++ b/LunaHook/util/util.cc
@@ -221,10 +221,14 @@ DWORD FindImportEntry(DWORD hModule, DWORD fun)
 #endif
 
 bool CheckFile(LPCWSTR name)
+{
+  return CheckFile_exits(name,false);
+}
+bool CheckFile_exits(LPCWSTR name,bool if_exits_also_ok)
 {
 	WIN32_FIND_DATAW unused;
 	HANDLE file = FindFirstFileW(name, &unused);
-	if (file != INVALID_HANDLE_VALUE)
+	if ((file != INVALID_HANDLE_VALUE)||(if_exits_also_ok &&PathFileExists(name)))
 	{
 		FindClose(file);
 		return true;
@@ -234,7 +238,7 @@ bool CheckFile(LPCWSTR name)
 	while (*(--end) != L'\\');
 	wcscpy_s(end + 1, MAX_PATH, name);
 	file = FindFirstFileW(path, &unused);
-	if (file != INVALID_HANDLE_VALUE)
+	if ((file != INVALID_HANDLE_VALUE)||(if_exits_also_ok &&PathFileExists(path)))
 	{
 		FindClose(file);
 		return true;
diff --git a/LunaHook/util/util.h b/LunaHook/util/util.h
index 13dc957..990727e 100644
--- a/LunaHook/util/util.h
+++ b/LunaHook/util/util.h
@@ -33,6 +33,7 @@ DWORD FindCallAndEntryRel(DWORD fun, DWORD size, DWORD pt, DWORD sig);
 DWORD FindImportEntry(DWORD hModule, DWORD fun);
 #endif
 
+bool CheckFile_exits(LPCWSTR name, bool if_exits_also_ok);
 bool CheckFile(LPCWSTR name);
 
 bool SearchResourceString(LPCWSTR str);