diff --git a/test/ruby/test_exception.rb b/test/ruby/test_exception.rb
index db13db76d6..6955118de7 100644
--- a/test/ruby/test_exception.rb
+++ b/test/ruby/test_exception.rb
@@ -604,6 +604,30 @@ end.join
   rescue SystemStackError
   end
 
+  def test_machine_stackoverflow_by_trace
+    assert_normal_exit("#{<<-"begin;"}\n#{<<~"end;"}", timeout: 60)
+    begin;
+      require 'timeout'
+      require 'tracer'
+      class HogeError < StandardError
+        def to_s
+          message.upcase        # disable tailcall optimization
+        end
+      end
+      Tracer.stdout = open(IO::NULL, "w")
+      begin
+        Timeout.timeout(5) do
+          Tracer.on
+          HogeError.new.to_s
+        end
+      rescue Timeout::Error
+        # ok. there are no SEGV or critical error
+      rescue SystemStackError => e
+        # ok.
+      end
+    end;
+  end
+
   def test_cause
     msg = "[Feature #8257]"
     cause = nil
diff --git a/test/ruby/test_trace.rb b/test/ruby/test_trace.rb
index 434da70107..77be94e9be 100644
--- a/test/ruby/test_trace.rb
+++ b/test/ruby/test_trace.rb
@@ -59,28 +59,4 @@ class TestTrace < Test::Unit::TestCase
              a.any? {true}
            }.value, bug2722)
   end
-
-  def test_trace_stackoverflow
-    assert_normal_exit("#{<<-"begin;"}\n#{<<~"end;"}", timeout: 60)
-    begin;
-      require 'timeout'
-      require 'tracer'
-      class HogeError < StandardError
-        def to_s
-          message.upcase        # disable tailcall optimization
-        end
-      end
-      Tracer.stdout = open(IO::NULL, "w")
-      begin
-        Timeout.timeout(5) do
-          Tracer.on
-          HogeError.new.to_s
-        end
-      rescue Timeout::Error
-        # ok. there are no SEGV or critical error
-      rescue SystemStackError => e
-        # ok.
-      end
-    end;
-  end
 end