diff --git a/src/os/windows/Stella.vcxproj b/src/os/windows/Stella.vcxproj
index 3739da9a7..56f11c4be 100755
--- a/src/os/windows/Stella.vcxproj
+++ b/src/os/windows/Stella.vcxproj
@@ -1755,7 +1755,7 @@
     <ClInclude Include="..\..\gui\WhatsNewDialog.hxx" />
     <ClInclude Include="..\..\lib\httplib\httplib.h" />
     <ClInclude Include="..\..\lib\httplib\http_lib.hxx" />
-    <ClInclude Include="..\..\lib\json\json.hxx" />
+    <ClInclude Include="..\..\lib\json\json.hpp" />
     <ClInclude Include="..\..\lib\json\json_lib.hxx" />
     <ClInclude Include="..\..\lib\libpng\pngdebug.h" />
     <ClInclude Include="..\..\lib\libpng\pnginfo.h" />
@@ -1984,4 +1984,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/src/os/windows/Stella.vcxproj.filters b/src/os/windows/Stella.vcxproj.filters
index 00cfe2cd0..5dda10ff9 100644
--- a/src/os/windows/Stella.vcxproj.filters
+++ b/src/os/windows/Stella.vcxproj.filters
@@ -1242,9 +1242,6 @@
     <ClCompile Include="..\..\emucore\CartJANE.cxx">
       <Filter>Source Files\emucore</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\emucore\CortexMß.cxx">
-      <Filter>Source Files\emucore</Filter>
-    </ClCompile>
     <ClCompile Include="..\..\debugger\gui\CartJANEWidget.cxx">
       <Filter>Source Files\debugger\gui</Filter>
     </ClCompile>
@@ -1266,6 +1263,9 @@
     <ClCompile Include="..\..\emucore\elf\VcsLib.cxx">
       <Filter>Source Files\emucore\elf</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\emucore\CortexM0.cxx">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\emucore\AtariVox.hxx">
@@ -1967,9 +1967,6 @@
     <ClInclude Include="..\..\gui\ToolTip.hxx">
       <Filter>Header Files\gui</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\lib\json\json.hxx">
-      <Filter>Header Files\lib\json</Filter>
-    </ClInclude>
     <ClInclude Include="..\..\lib\json\json_lib.hxx">
       <Filter>Header Files\lib\json</Filter>
     </ClInclude>
@@ -2558,12 +2555,15 @@
     <ClInclude Include="..\..\emucore\elf\ElfEnvironment.hxx">
       <Filter>Header Files\emucore\elf</Filter>
     </ClInclude>
-    <ClCompile Include="..\..\emucore\elf\BusTransactionQueue.hxx">
-      <Filter>Source Files\emucore\elf</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\emucore\elf\VcsLib.hxx">
-      <Filter>Source Files\emucore\elf</Filter>
-    </ClCompile>
+    <ClInclude Include="..\..\emucore\elf\BusTransactionQueue.hxx">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\emucore\elf\VcsLib.hxx">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\lib\json\json.hpp">
+      <Filter>Header Files\lib\json</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="stella.ico">
@@ -2575,4 +2575,4 @@
       <Filter>Resource Files</Filter>
     </ResourceCompile>
   </ItemGroup>
-</Project>
+</Project>
\ No newline at end of file