diff --git a/activesupport/test/log_subscriber_test.rb b/activesupport/test/log_subscriber_test.rb
index 0c1f3c51ed53efa906795bddfeec94ea1f70a3c9..8e160714b1b00925607e44b0d659f2a9a7e2b242 100644
--- a/activesupport/test/log_subscriber_test.rb
+++ b/activesupport/test/log_subscriber_test.rb
@@ -118,6 +118,6 @@ def test_logging_does_not_die_on_failures
     assert_equal 'some_event.my_log_subscriber', @logger.logged(:info).last
 
     assert_equal 1, @logger.logged(:error).size
-    assert_equal 'Could not log "puke.my_log_subscriber" event. RuntimeError: puke', @logger.logged(:error).last
+    assert_match 'Could not log "puke.my_log_subscriber" event. RuntimeError: puke', @logger.logged(:error).last
   end
-end
\ No newline at end of file
+end