diff --git a/Examples/Example/Example.cs b/Examples/Example/Example.cs
index de89c45a9..f4738504d 100644
--- a/Examples/Example/Example.cs
+++ b/Examples/Example/Example.cs
@@ -1,4 +1,5 @@
-// A simple Terminal.Gui example in C# - using C# 9.0 Top-level statements
+#nullable enable
+// A simple Terminal.Gui example in C# - using C# 9.0 Top-level statements
 
 // This is a simple example application.  For the full range of functionality
 // see the UICatalog project
diff --git a/Examples/FluentExample/Program.cs b/Examples/FluentExample/Program.cs
index de7d8aaa3..52184adda 100644
--- a/Examples/FluentExample/Program.cs
+++ b/Examples/FluentExample/Program.cs
@@ -1,3 +1,4 @@
+#nullable enable
 // Fluent API example demonstrating IRunnable with automatic disposal and result extraction
 
 using Terminal.Gui.App;
diff --git a/Examples/RunnableWrapperExample/Program.cs b/Examples/RunnableWrapperExample/Program.cs
index e0d423819..9c16a26ef 100644
--- a/Examples/RunnableWrapperExample/Program.cs
+++ b/Examples/RunnableWrapperExample/Program.cs
@@ -1,3 +1,4 @@
+#nullable enable
 // Example demonstrating how to make ANY View runnable without implementing IRunnable
 
 using Terminal.Gui.App;