diff --git a/plugins/python/python3.vcxproj b/plugins/python/python3.vcxproj
index 7e717824..9e5d223a 100644
--- a/plugins/python/python3.vcxproj
+++ b/plugins/python/python3.vcxproj
@@ -30,6 +30,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;PYTHON_EXPORTS;Py_NO_LINK_LIB;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <UndefinePreprocessorDefinitions>Py_REF_DEBUG;Py_TRACE_REFS;%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
       <AdditionalIncludeDirectories>$(Glib);$(Python3Path)\include;..\..\src\common;$(ZoiteChatLib);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
@@ -41,9 +42,10 @@
       <Command>"$(Python3Path)\python.exe" generate_plugin.py ..\..\src\common\zoitechat-plugin.h python.py "$(IntDir)python.c"</Command>
     </PreBuildEvent>
   </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;PYTHON_EXPORTS;Py_NO_LINK_LIB;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <UndefinePreprocessorDefinitions>Py_REF_DEBUG;Py_TRACE_REFS;%(UndefinePreprocessorDefinitions)</UndefinePreprocessorDefinitions>
       <AdditionalIncludeDirectories>$(Glib);$(Python3Path)\include;..\..\src\common;$(ZoiteChatLib);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
@@ -69,3 +71,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
 </Project>
 
+