diff --git a/src/mono/wasm/build/WasmApp.targets b/src/mono/wasm/build/WasmApp.targets
index fbd16363dd9ea3..856b017d10cb82 100644
--- a/src/mono/wasm/build/WasmApp.targets
+++ b/src/mono/wasm/build/WasmApp.targets
@@ -118,6 +118,9 @@
   <ItemGroup>
     <!-- Allow running/debugging from VS -->
     <ProjectCapability Include="DotNetCoreWeb"/>
+
+    <SupportedPlatform Condition="'$(IsWasmProject)' == 'true'" Remove="@(SupportedPlatform)" />
+    <SupportedPlatform Condition="'$(IsWasmProject)' == 'true'" Include="browser" />
   </ItemGroup>
 
   <PropertyGroup Label="Identify app bundle directory to run from">
diff --git a/src/mono/wasm/templates/templates/browser/Properties/AssemblyInfo.cs b/src/mono/wasm/templates/templates/browser/Properties/AssemblyInfo.cs
new file mode 100644
index 00000000000000..9ad9b578f20649
--- /dev/null
+++ b/src/mono/wasm/templates/templates/browser/Properties/AssemblyInfo.cs
@@ -0,0 +1,4 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+[assembly:System.Runtime.Versioning.SupportedOSPlatform("browser")]
diff --git a/src/mono/wasm/templates/templates/console/Properties/AssemblyInfo.cs b/src/mono/wasm/templates/templates/console/Properties/AssemblyInfo.cs
new file mode 100644
index 00000000000000..9ad9b578f20649
--- /dev/null
+++ b/src/mono/wasm/templates/templates/console/Properties/AssemblyInfo.cs
@@ -0,0 +1,4 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+[assembly:System.Runtime.Versioning.SupportedOSPlatform("browser")]