diff --git a/src/Components/WebAssembly/Sdk/integrationtests/WasmBuildLazyLoadTest.cs b/src/Components/WebAssembly/Sdk/integrationtests/WasmBuildLazyLoadTest.cs
index 424caeda2d..e3925465bb 100644
--- a/src/Components/WebAssembly/Sdk/integrationtests/WasmBuildLazyLoadTest.cs
+++ b/src/Components/WebAssembly/Sdk/integrationtests/WasmBuildLazyLoadTest.cs
@@ -21,7 +21,7 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
             project.AddProjectFileContent(
 @"
 <ItemGroup>
-    <BlazorWebAssemblyLazyLoad Include='RazorClassLibrary' />
+    <BlazorWebAssemblyLazyLoad Include='RazorClassLibrary.dll' />
 </ItemGroup>
 ");
 
@@ -59,7 +59,7 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
             project.AddProjectFileContent(
 @"
 <ItemGroup>
-    <BlazorWebAssemblyLazyLoad Include='RazorClassLibrary' />
+    <BlazorWebAssemblyLazyLoad Include='RazorClassLibrary.dll' />
 </ItemGroup>
 ");
 
@@ -97,7 +97,7 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
             project.AddProjectFileContent(
 @"
 <ItemGroup>
-    <BlazorWebAssemblyLazyLoad Include='RazorClassLibrary' />
+    <BlazorWebAssemblyLazyLoad Include='RazorClassLibrary.dll' />
 </ItemGroup>
 ");
 
@@ -135,7 +135,7 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
             project.AddProjectFileContent(
 @"
 <ItemGroup>
-    <BlazorWebAssemblyLazyLoad Include='RazorClassLibrary' />
+    <BlazorWebAssemblyLazyLoad Include='RazorClassLibrary.dll' />
 </ItemGroup>
 ");
 
diff --git a/src/Components/WebAssembly/Sdk/src/GenerateBlazorWebAssemblyBootJson.cs b/src/Components/WebAssembly/Sdk/src/GenerateBlazorWebAssemblyBootJson.cs
index 81cb6ecb96..ae784010fd 100644
--- a/src/Components/WebAssembly/Sdk/src/GenerateBlazorWebAssemblyBootJson.cs
+++ b/src/Components/WebAssembly/Sdk/src/GenerateBlazorWebAssemblyBootJson.cs
@@ -88,7 +88,7 @@ namespace Microsoft.NET.Sdk.BlazorWebAssembly
                     var assetType = resource.GetMetadata("AssetType");
                     var resourceName = $"{fileName}{extension}";
 
-                    if (IsLazyLoadedAssembly(fileName))
+                    if (IsLazyLoadedAssembly(resourceName))
                     {
                         resourceData.lazyAssembly ??= new ResourceHashesByNameDictionary();
                         resourceList = resourceData.lazyAssembly;
diff --git a/src/Components/test/testassets/BasicTestApp/BasicTestApp.csproj b/src/Components/test/testassets/BasicTestApp/BasicTestApp.csproj
index 122d4bacff..13f08442bf 100644
--- a/src/Components/test/testassets/BasicTestApp/BasicTestApp.csproj
+++ b/src/Components/test/testassets/BasicTestApp/BasicTestApp.csproj
@@ -30,8 +30,8 @@
   </ItemGroup>
 
   <ItemGroup>
-    <BlazorWebAssemblyLazyLoad Include="Newtonsoft.Json" />
-    <BlazorWebAssemblyLazyLoad Include="LazyTestContentPackage" />
+    <BlazorWebAssemblyLazyLoad Include="Newtonsoft.Json.dll" />
+    <BlazorWebAssemblyLazyLoad Include="LazyTestContentPackage.dll" />
   </ItemGroup>
 
 </Project>