diff --git a/WeChatFerry/spy/Spy.vcxproj b/WeChatFerry/spy/Spy.vcxproj
index cbe58f1..ca8ea82 100644
--- a/WeChatFerry/spy/Spy.vcxproj
+++ b/WeChatFerry/spy/Spy.vcxproj
@@ -105,7 +105,8 @@
       <SubSystem>Windows</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableUAC>false</EnableUAC>
-      <ModuleDefinitionFile>spy.def</ModuleDefinitionFile>
+      <ModuleDefinitionFile>
+      </ModuleDefinitionFile>
       <AdditionalOptions> /ignore:4099 %(AdditionalOptions)</AdditionalOptions>
       <AdditionalLibraryDirectories>$(SolutionDir)smc;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>iphlpapi.lib;wsock32.lib;ws2_32.lib;crypt32.lib;Codec.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -158,7 +159,8 @@ xcopy /y $(SolutionDir)DISCLAIMER.md $(SolutionDir)..\clients\python\wcferry</Co
       <SubSystem>Windows</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableUAC>false</EnableUAC>
-      <ModuleDefinitionFile>spy.def</ModuleDefinitionFile>
+      <ModuleDefinitionFile>
+      </ModuleDefinitionFile>
       <AdditionalOptions> /ignore:4099 %(AdditionalOptions)</AdditionalOptions>
       <AdditionalLibraryDirectories>$(SolutionDir)smc;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>iphlpapi.lib;wsock32.lib;ws2_32.lib;crypt32.lib;Codec.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -212,7 +214,8 @@ xcopy /y $(SolutionDir)DISCLAIMER.md $(SolutionDir)..\clients\python\wcferry</Co
       <OptimizeReferences>true</OptimizeReferences>
       <GenerateDebugInformation>false</GenerateDebugInformation>
       <EnableUAC>false</EnableUAC>
-      <ModuleDefinitionFile>spy.def</ModuleDefinitionFile>
+      <ModuleDefinitionFile>
+      </ModuleDefinitionFile>
       <AdditionalLibraryDirectories>$(SolutionDir)smc;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>iphlpapi.lib;wsock32.lib;ws2_32.lib;crypt32.lib;Codec.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalOptions> /ignore:4099 %(AdditionalOptions)</AdditionalOptions>
@@ -282,7 +285,6 @@ xcopy /y $(SolutionDir)DISCLAIMER.md $(SolutionDir)..\clients\python\wcferry</Co
   </ItemGroup>
   <ItemGroup>
     <None Include="..\rpc\proto\wcf.proto" />
-    <None Include="spy.def" />
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="spy.rc" />
diff --git a/WeChatFerry/spy/Spy.vcxproj.filters b/WeChatFerry/spy/Spy.vcxproj.filters
index 313caee..dafe11c 100644
--- a/WeChatFerry/spy/Spy.vcxproj.filters
+++ b/WeChatFerry/spy/Spy.vcxproj.filters
@@ -142,9 +142,6 @@
     </ClCompile>
   </ItemGroup>
   <ItemGroup>
-    <None Include="spy.def">
-      <Filter>源文件</Filter>
-    </None>
     <None Include="..\rpc\proto\wcf.proto">
       <Filter>nnrpc</Filter>
     </None>
diff --git a/WeChatFerry/spy/spy.cpp b/WeChatFerry/spy/spy.cpp
index 14d36f7..cc7e6b0 100644
--- a/WeChatFerry/spy/spy.cpp
+++ b/WeChatFerry/spy/spy.cpp
@@ -44,5 +44,5 @@ void Cleanup()
 
 extern "C" {
 __declspec(dllexport) int InitSpy(void *args) { return Spy::Init(args); }
-__declspec(dllexport) void CleanupSpy() { Spy::Cleanup(); }
+__declspec(dllexport) int CleanupSpy() { Spy::Cleanup(); return 0;}
 }
diff --git a/WeChatFerry/spy/spy.def b/WeChatFerry/spy/spy.def
deleted file mode 100644
index 3005a19..0000000
--- a/WeChatFerry/spy/spy.def
+++ /dev/null
@@ -1,3 +0,0 @@
-EXPORTS
-    InitSpy
-    CleanupSpy