diff --git a/cookbook/copilot-sdk/dotnet/recipe/pr-visualization.cs b/cookbook/copilot-sdk/dotnet/recipe/pr-visualization.cs
index afa80658..389677da 100644
--- a/cookbook/copilot-sdk/dotnet/recipe/pr-visualization.cs
+++ b/cookbook/copilot-sdk/dotnet/recipe/pr-visualization.cs
@@ -153,7 +153,7 @@ The current working directory is: {Environment.CurrentDirectory}
 });
 
 // Set up event handling
-session.On(evt =>
+session.On<SessionEvent>(evt =>
 {
     switch (evt)
     {