diff --git a/samples/MusicStore/MusicStore.csproj b/samples/MusicStore/MusicStore.csproj
index 4038f21a4d..9ab12985bc 100644
--- a/samples/MusicStore/MusicStore.csproj
+++ b/samples/MusicStore/MusicStore.csproj
@@ -7,6 +7,7 @@
     <TargetFrameworks>netcoreapp2.0;net461</TargetFrameworks>
     <DefineConstants>$(DefineConstants);DEMO</DefineConstants>
     <MvcRazorCompileOnPublish>true</MvcRazorCompileOnPublish>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <RuntimeIdentifiers Condition="'$(RUN_RUNTIME_STORE_TESTS)' != 'true'">win7-x86;win7-x64;linux-x64;osx-x64</RuntimeIdentifiers>
   </PropertyGroup>
 
diff --git a/test/MusicStore.E2ETests/MusicStore.E2ETests.csproj b/test/MusicStore.E2ETests/MusicStore.E2ETests.csproj
index 8684b4ccb8..a5137c44c6 100644
--- a/test/MusicStore.E2ETests/MusicStore.E2ETests.csproj
+++ b/test/MusicStore.E2ETests/MusicStore.E2ETests.csproj
@@ -5,6 +5,7 @@
   <PropertyGroup>
     <TargetFramework>netcoreapp2.0</TargetFramework>
     <UserSecretsId>MusicStore.E2ETests</UserSecretsId>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <ServerGarbageCollection>true</ServerGarbageCollection>
     <WarningsNotAsErrors>$(WarningsNotAsErrors);xUnit1004</WarningsNotAsErrors>
   </PropertyGroup>