diff --git a/build_msvc/libsecp256k1/libsecp256k1.vcxproj b/build_msvc/libsecp256k1/libsecp256k1.vcxproj
index f9b0a7975c..16ee32d87e 100644
--- a/build_msvc/libsecp256k1/libsecp256k1.vcxproj
+++ b/build_msvc/libsecp256k1/libsecp256k1.vcxproj
@@ -8,6 +8,8 @@
     <ConfigurationType>StaticLibrary</ConfigurationType>
   </PropertyGroup>
   <ItemGroup>
+    <ClCompile Include="..\..\src\secp256k1\src\precomputed_ecmult.c" />
+    <ClCompile Include="..\..\src\secp256k1\src\precomputed_ecmult_gen.c" />
     <ClCompile Include="..\..\src\secp256k1\src\secp256k1.c" />
   </ItemGroup>
   <ItemDefinitionGroup>