diff --git a/src/ucxxrt.props b/src/ucxxrt.props
index c86a6b0..2133abb 100644
--- a/src/ucxxrt.props
+++ b/src/ucxxrt.props
@@ -61,7 +61,7 @@
     <!-- Include STL -->
     <IncludePath>$(VC_IncludePath);$(IncludePath)</IncludePath>
   </PropertyGroup>
-  
+
   <ItemDefinitionGroup Condition=" ('$(UCXXRT_KernelMode)'=='true') ">
     <ClCompile>
       <PreprocessorDefinitions>_NO_CRT_STDIO_INLINE;_HAS_EXCEPTIONS=1;_ITERATOR_DEBUG_LEVEL=0;__KERNEL_MODE=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -73,6 +73,12 @@
     </Link>
   </ItemDefinitionGroup>
 
+  <ItemDefinitionGroup Condition=" ('$(UCXXRT_KernelMode)'=='true') ">
+    <ClCompile>
+      <PreprocessorDefinitions>_KERNEL_MODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+
   <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
     <ClCompile>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/src/ucxxrtlib.props b/src/ucxxrtlib.props
index 118e01d..377425a 100644
--- a/src/ucxxrtlib.props
+++ b/src/ucxxrtlib.props
@@ -62,6 +62,12 @@ xcopy /D /S /Y /V /F "$(SolutionDir)lib" "$(SolutionDir)ucxxrt\lib\" /EXCLUDE:$(
     </ClCompile>
   </ItemDefinitionGroup>
 
+  <ItemDefinitionGroup Condition=" ('$(UCXXRT_KernelMode)'=='true') ">
+    <ClCompile>
+      <PreprocessorDefinitions>_KERNEL_MODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+
   <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
     <ClCompile>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -94,4 +100,4 @@ xcopy /D /S /Y /V /F "$(SolutionDir)lib" "$(SolutionDir)ucxxrt\lib\" /EXCLUDE:$(
   Kernel Mode      : $(UCXXRT_KernelMode)
   " Importance="high" />
   </Target>
-</Project>
+</Project>
\ No newline at end of file