diff --git a/public/java/src/org/broadinstitute/sting/gatk/walkers/annotator/MVLikelihoodRatio.java b/public/java/src/org/broadinstitute/sting/gatk/walkers/annotator/MVLikelihoodRatio.java
index e38d7d142..07fbfc3d2 100755
--- a/public/java/src/org/broadinstitute/sting/gatk/walkers/annotator/MVLikelihoodRatio.java
+++ b/public/java/src/org/broadinstitute/sting/gatk/walkers/annotator/MVLikelihoodRatio.java
@@ -5,6 +5,7 @@ import org.broadinstitute.sting.gatk.contexts.ReferenceContext;
 import org.broadinstitute.sting.gatk.refdata.RefMetaDataTracker;
 import org.broadinstitute.sting.gatk.samples.Sample;
 import org.broadinstitute.sting.gatk.samples.SampleDB;
+import org.broadinstitute.sting.gatk.walkers.Walker;
 import org.broadinstitute.sting.gatk.walkers.annotator.interfaces.AnnotatorCompatibleWalker;
 import org.broadinstitute.sting.gatk.walkers.annotator.interfaces.ExperimentalAnnotation;
 import org.broadinstitute.sting.gatk.walkers.annotator.interfaces.InfoFieldAnnotation;
@@ -33,7 +34,7 @@ public class MVLikelihoodRatio extends InfoFieldAnnotation implements Experiment
 
     public Map<String, Object> annotate(RefMetaDataTracker tracker, AnnotatorCompatibleWalker walker, ReferenceContext ref, Map<String, AlignmentContext> stratifiedContexts, VariantContext vc) {
         if ( mendelianViolation == null ) {
-            if (checkAndSetSamples(((VariantAnnotator) walker).getSampleDB())) {
+            if (checkAndSetSamples(((Walker) walker).getSampleDB())) {
                 mendelianViolation = new MendelianViolation(((VariantAnnotator)walker).minGenotypeQualityP );
             }
             else {