diff --git a/lib/VCMI_lib.vcxproj b/lib/VCMI_lib.vcxproj
index 093367911..a7efc7d2e 100644
--- a/lib/VCMI_lib.vcxproj
+++ b/lib/VCMI_lib.vcxproj
@@ -353,6 +353,7 @@
     <ClInclude Include="rmg\CZoneGraphGenerator.h" />
     <ClInclude Include="rmg\CZonePlacer.h" />
     <ClInclude Include="rmg\float3.h" />
+    <ClInclude Include="SpellMechanics.h" />
     <ClInclude Include="StartInfo.h" />
     <ClInclude Include="StdInc.h" />
     <ClInclude Include="UnlockGuard.h" />
diff --git a/lib/VCMI_lib.vcxproj.filters b/lib/VCMI_lib.vcxproj.filters
index 9e1ec4ec5..56a510e90 100644
--- a/lib/VCMI_lib.vcxproj.filters
+++ b/lib/VCMI_lib.vcxproj.filters
@@ -205,6 +205,7 @@
     </ClCompile>
     <ClCompile Include="registerTypes\TypesMapObjects3.cpp" />
     <ClCompile Include="IHandlerBase.cpp" />
+    <ClCompile Include="SpellMechanics.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="CCreatureSet.h">
@@ -492,5 +493,8 @@
     <ClInclude Include="CGameStateFwd.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="SpellMechanics.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
\ No newline at end of file