diff --git a/yaml/src/test/java/com/fasterxml/jackson/dataformat/yaml/failing/SimpleGeneration215Test.java b/yaml/src/test/java/com/fasterxml/jackson/dataformat/yaml/failing/SimpleGeneration215Test.java
index 081b1232..5ddbf453 100644
--- a/yaml/src/test/java/com/fasterxml/jackson/dataformat/yaml/failing/SimpleGeneration215Test.java
+++ b/yaml/src/test/java/com/fasterxml/jackson/dataformat/yaml/failing/SimpleGeneration215Test.java
@@ -6,6 +6,7 @@
 import com.fasterxml.jackson.dataformat.yaml.YAMLGenerator;
 import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
 
+// NOTE: fails only on 2.x (2.12) -- fixed for 3.0
 public class SimpleGeneration215Test extends ModuleTestBase
 {
     // [dataformats-text#215]: setting used in constructor