diff --git a/src/SourceBuild/tarball/content/build.proj b/src/SourceBuild/tarball/content/build.proj
index 52c3341e0..5976d8446 100644
--- a/src/SourceBuild/tarball/content/build.proj
+++ b/src/SourceBuild/tarball/content/build.proj
@@ -189,7 +189,7 @@
   <Target Name="CreatePrebuiltsTarballIfPrebuiltsExist"
           Condition="'@(PrebuiltFile->Count())' != '0'">
     <PropertyGroup>
-      <TarballFilePath>$(OutputPath)$(SourceBuiltPrebuiltsTarballName).$(installerOutputPackageVersion).tar.gz</TarballFilePath>
+      <TarballFilePath>$(OutputPath)$(SourceBuiltPrebuiltsTarballName).$(installerOutputPackageVersion).$(BuildArchitecture).tar.gz</TarballFilePath>
       <TarballWorkingDir>$(ResultingPrebuiltPackagesDir)</TarballWorkingDir>
     </PropertyGroup>