diff --git a/test/ruby/test_syntax.rb b/test/ruby/test_syntax.rb
index 51e898f972..35c70254bf 100644
--- a/test/ruby/test_syntax.rb
+++ b/test/ruby/test_syntax.rb
@@ -110,7 +110,8 @@ class TestSyntax < Test::Unit::TestCase
   end
 
   def test_warn_grouped_expression
-    assert_warn("test:2: warning: (...) interpreted as grouped expression\n") do
+    bug5214 = '[ruby-core:39050]'
+    assert_warn("", bug5214) do
       assert_valid_syntax("foo \\\n(\n  true)", "test") {$VERBOSE = true}
     end
   end