diff --git a/DataStructures/DataStructures.vcxproj b/DataStructures/DataStructures.vcxproj
index 4e86c8b..ff6d9bd 100644
--- a/DataStructures/DataStructures.vcxproj
+++ b/DataStructures/DataStructures.vcxproj
@@ -128,9 +128,11 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClInclude Include="src\Generic\directednode.h" />
+    <ClInclude Include="src\Generic\undirectednode.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="src\Generic\directednode.cpp" />
+    <ClCompile Include="src\Generic\undirectednode.cpp" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
diff --git a/DataStructures/DataStructures.vcxproj.filters b/DataStructures/DataStructures.vcxproj.filters
index 3b1ad71..f1bf248 100644
--- a/DataStructures/DataStructures.vcxproj.filters
+++ b/DataStructures/DataStructures.vcxproj.filters
@@ -18,10 +18,16 @@
     <ClInclude Include="src\Generic\directednode.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="src\Generic\undirectednode.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="src\Generic\directednode.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="src\Generic\undirectednode.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file