diff --git a/TestAssets/TestProjects/MSBuildTestApp/MSBuildTestApp.csproj b/TestAssets/TestProjects/MSBuildTestApp/MSBuildTestApp.csproj
index b68fa804c..0bfe9b1e3 100644
--- a/TestAssets/TestProjects/MSBuildTestApp/MSBuildTestApp.csproj
+++ b/TestAssets/TestProjects/MSBuildTestApp/MSBuildTestApp.csproj
@@ -5,6 +5,7 @@
     <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp2.1</TargetFramework>
     <RuntimeIdentifiers>win7-x64;win7-x86;osx.10.12-x64;ubuntu.14.04-x64;ubuntu.16.04-x64;ubuntu.16.10-x64;centos.7-x64;rhel.7-x64;debian.8-x64;fedora.24-x64;opensuse.42.1-x64</RuntimeIdentifiers>
+    <RestoreAdditionalProjectSources Condition="'$(TEST_PACKAGES)' != ''">$(TEST_PACKAGES)</RestoreAdditionalProjectSources>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/TestAssets/TestProjects/MSBuildTestApp/NuGet.Config b/TestAssets/TestProjects/MSBuildTestApp/NuGet.Config
deleted file mode 100644
index b8e876fcb..000000000
--- a/TestAssets/TestProjects/MSBuildTestApp/NuGet.Config
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<configuration>
-  <packageSources>
-    <add key="test-packages" value="../../../artifacts/testpackages" />
-  </packageSources>
-</configuration>