diff --git a/src/Interactive/Features/Interactive/Core/InteractiveHost.Service.cs b/src/Interactive/Features/Interactive/Core/InteractiveHost.Service.cs
index 1110944e1037c9bbd12dc45377bd2533ef8cc779..8517809ba6097807b833ece9955a69a28026f122 100644
--- a/src/Interactive/Features/Interactive/Core/InteractiveHost.Service.cs
+++ b/src/Interactive/Features/Interactive/Core/InteractiveHost.Service.cs
@@ -820,8 +820,7 @@ private async Task<ScriptState<object>> ExecuteOnUIThread(Script<object> script,
                         }
                         catch (Exception e)
                         {
-                            // TODO (tomat): format exception
-                            Console.Error.WriteLine(e);
+                            Console.Error.WriteLine(_replServiceProvider.ObjectFormatter.FormatUnhandledException(e));
                             return null;
                         }
                     }))).ConfigureAwait(false);