diff --git a/src/SourceBuild/content/build.proj b/src/SourceBuild/content/build.proj
index c132475da..0821b98b7 100644
--- a/src/SourceBuild/content/build.proj
+++ b/src/SourceBuild/content/build.proj
@@ -7,6 +7,10 @@
 
   <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />
 
+  <PropertyGroup>
+    <SkipErrorOnPrebuilts>true</SkipErrorOnPrebuilts>
+  </PropertyGroup>
+
   <Target Name="Build" DependsOnTargets="PrepareOutput;InitBuild">
     <Message Text="Build Environment: $(Platform) $(Configuration) $(TargetOS) $(TargetRid)" />