diff --git a/bin/test_debug b/bin/test_debug
index 5e3147acb..f1dda8166 100755
--- a/bin/test_debug
+++ b/bin/test_debug
@@ -4,6 +4,6 @@ set -e  # Exit on error
 
 make all
 ./run_herb_tests
-NO_TIMEOUT=true bundle exec rake test
+FORK_TESTS=true bundle exec rake test
 
 echo "Tests successful!"
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 709515114..5d6dbfbb4 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -9,7 +9,11 @@
 
 require "active_support/core_ext/string/output_safety"
 
-require_relative "fork_helper" if ENV["NO_TIMEOUT"].nil?
+if ENV["FORK_TESTS"]
+  require_relative "fork_helper"
+else
+  puts "TIP: If a segfault in the native C extension crashes the test runner, run with FORK_TESTS=true to isolate each test in a forked process and identify which test causes the crash."
+end
 require_relative "snapshot_utils"
 
 Minitest::Spec::DSL.send(:alias_method, :test, :it)