diff --git a/java/src/org/broadinstitute/sting/oneoffprojects/walkers/varianteval2/MendelianViolationEvaluator.java b/java/src/org/broadinstitute/sting/oneoffprojects/walkers/varianteval2/MendelianViolationEvaluator.java
index 2a4053622..02ce6058d 100755
--- a/java/src/org/broadinstitute/sting/oneoffprojects/walkers/varianteval2/MendelianViolationEvaluator.java
+++ b/java/src/org/broadinstitute/sting/oneoffprojects/walkers/varianteval2/MendelianViolationEvaluator.java
@@ -126,7 +126,7 @@ public class MendelianViolationEvaluator extends VariantEvaluator {
                         throw new StingException("BUG: unexpected child genotype class " + childG);
                     }
 
-                    return label;
+                    return "MendelViolation=" + label;
                 }
             }
         }