diff --git a/src/Mobile/eShopOnContainers/eShopOnContainers.UnitTests/eShopOnContainers.UnitTests.csproj b/src/Mobile/eShopOnContainers/eShopOnContainers.UnitTests/eShopOnContainers.UnitTests.csproj
index 7366ac97a..c62238674 100644
--- a/src/Mobile/eShopOnContainers/eShopOnContainers.UnitTests/eShopOnContainers.UnitTests.csproj
+++ b/src/Mobile/eShopOnContainers/eShopOnContainers.UnitTests/eShopOnContainers.UnitTests.csproj
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
+	<AssertTargetFallback>$(AssertTargetFallback);portable-win+net45+wp8+win81</AssertTargetFallback>
   </PropertyGroup>
 
   <ItemGroup>