diff --git a/java/src/org/broadinstitute/sting/utils/SampleUtils.java b/java/src/org/broadinstitute/sting/utils/SampleUtils.java
index 1a1cb42bc..ec26d5fde 100755
--- a/java/src/org/broadinstitute/sting/utils/SampleUtils.java
+++ b/java/src/org/broadinstitute/sting/utils/SampleUtils.java
@@ -80,7 +80,7 @@ public class SampleUtils {
         List<ReferenceOrderedDataSource> dataSources = toolkit.getRodDataSources();
         for ( ReferenceOrderedDataSource source : dataSources ) {
             RMDTrack rod = source.getReferenceOrderedData();
-            if ( rod.getType().equals(VCFRecord.class) ) {
+            if ( rod.getType().equals(VCFCodec.class) ) {
                 VCFReader reader = new VCFReader(rod.getFile());
                 samples.addAll(reader.getHeader().getGenotypeSamples());
                 reader.close();