diff --git a/vcbuild.bat b/vcbuild.bat
index b515af8f02..ad246c62b7 100644
--- a/vcbuild.bat
+++ b/vcbuild.bat
@@ -178,7 +178,9 @@ echo Project files generated.
 if defined nobuild goto sign
 
 @rem Build the sln with msbuild.
-msbuild node.sln /m /t:%target% /p:Configuration=%config% /clp:NoSummary;NoItemAndPropertyList;Verbosity=minimal /nologo
+set "msbplatform=Win32"
+if "%target_arch%"=="x64" set "msbplatform=x64"
+msbuild node.sln /m /t:%target% /p:Configuration=%config% /p:Platform=%msbplatform% /clp:NoSummary;NoItemAndPropertyList;Verbosity=minimal /nologo
 if errorlevel 1 goto exit
 if "%target%" == "Clean" goto exit