diff --git a/vscode/Chapter06/NullHandling/NullHandling.csproj b/vscode/Chapter06/NullHandling/NullHandling.csproj
index 6431db6..d66d7b7 100644
--- a/vscode/Chapter06/NullHandling/NullHandling.csproj
+++ b/vscode/Chapter06/NullHandling/NullHandling.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -7,8 +7,8 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
-	<ItemGroup>
-		<Using Include="System.Console" Static="true" />
-	</ItemGroup>
+  <ItemGroup>
+    <Using Include="System.Console" Static="true" />
+  </ItemGroup>
 
 </Project>