diff --git a/src/AgentOs.Web/AgentOs.Web.csproj b/src/AgentOs.Web/AgentOs.Web.csproj
index 9ff9c58..c3d5cac 100644
--- a/src/AgentOs.Web/AgentOs.Web.csproj
+++ b/src/AgentOs.Web/AgentOs.Web.csproj
@@ -5,7 +5,8 @@
     <AssemblyName>AgentOs.Web</AssemblyName>
     <UserSecretsId>agentos-prototype</UserSecretsId>
     <InvariantGlobalization>false</InvariantGlobalization>
-    <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
+    <!-- Warnings-as-errors like every other project (Directory.Build.props). -->
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <!-- azd builds this project to a container image via `dotnet publish -t:PublishContainer`. -->
     <EnableSdkContainerSupport>true</EnableSdkContainerSupport>
   </PropertyGroup>