diff --git a/libsodium.vcxproj b/libsodium.vcxproj
index 0148d71b..f3823a87 100644
--- a/libsodium.vcxproj
+++ b/libsodium.vcxproj
@@ -179,6 +179,10 @@
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
+    <PreBuildEvent>
+      <Command>$(SolutionDir)msvc-scripts\process.bat</Command>
+      <Message>Process .in files</Message>
+    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='DebugDLL|Win32'">
     <ClCompile>
@@ -195,6 +199,10 @@
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
+    <PreBuildEvent>
+      <Command>$(VC_SourcePath)/msvc-scripts/process.bat</Command>
+      <Message>Process .in files</Message>
+    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
@@ -248,6 +256,10 @@
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
     </Link>
+    <PreBuildEvent>
+      <Command>$(VC_SourcePath)/msvc-scripts/process.bat</Command>
+      <Message>Process .in files</Message>
+    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseDLL|Win32'">
     <ClCompile>
@@ -269,6 +281,10 @@
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
     </Link>
+    <PreBuildEvent>
+      <Command>$(VC_SourcePath)/msvc-scripts/process.bat</Command>
+      <Message>Process .in files</Message>
+    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
diff --git a/msvc-scripts/process.bat b/msvc-scripts/process.bat
new file mode 100755
index 00000000..323aa7f7
--- /dev/null
+++ b/msvc-scripts/process.bat
@@ -0,0 +1,8 @@
+cscript msvc-scripts/rep.vbs //Nologo s/@HAVE_TI_MODE_V@/0/ < src\libsodium\include\sodium\crypto_scalarmult_curve25519.h.in > src\libsodium\include\sodium\crypto_scalarmult_curve25519.h
+
+cscript msvc-scripts/rep.vbs //Nologo s/@HAVE_AMD64_ASM_V@/0/ < src\libsodium\include\sodium\crypto_stream_salsa20.h.in > src\libsodium\include\sodium\crypto_stream_salsa20.h
+
+cscript msvc-scripts/rep.vbs //Nologo s/@VERSION@/0.4.3/ < src\libsodium\include\sodium\version.h.in > tmp
+cscript msvc-scripts/rep.vbs //Nologo s/@SODIUM_LIBRARY_VERSION_MAJOR@/4/ < tmp > tmp2
+cscript msvc-scripts/rep.vbs //Nologo s/@SODIUM_LIBRARY_VERSION_MINOR@/3/ < tmp2 > src\libsodium\include\sodium\version.h
+del tmp tmp2
diff --git a/msvc-scripts/rep.vbs b/msvc-scripts/rep.vbs
new file mode 100644
index 00000000..3611f6ca
--- /dev/null
+++ b/msvc-scripts/rep.vbs
@@ -0,0 +1,12 @@
+Dim pat, patparts, rxp, inp
+pat = WScript.Arguments(0)
+patparts = Split(pat, "/")
+Set rxp = new RegExp
+rxp.Global = True
+rxp.Multiline = False
+rxp.Pattern = patparts(1)
+Do While Not WScript.StdIn.AtEndOfStream
+  inp = WScript.StdIn.ReadLine()
+  WScript.Echo rxp.Replace(inp, patparts(2))
+Loop
+