diff --git a/lib/livebook/runtime/evaluator.ex b/lib/livebook/runtime/evaluator.ex
index 3313ba8ca..e154b7552 100644
--- a/lib/livebook/runtime/evaluator.ex
+++ b/lib/livebook/runtime/evaluator.ex
@@ -818,6 +818,7 @@ defmodule Livebook.Runtime.Evaluator do
 
   defp extra_diagnostic?(%SyntaxError{}), do: true
   defp extra_diagnostic?(%TokenMissingError{}), do: true
+  defp extra_diagnostic?(%MismatchedDelimiterError{}), do: true
 
   defp extra_diagnostic?(%CompileError{description: description}) do
     not String.contains?(description, "(errors have been logged)")