diff --git a/public/java/src/org/broadinstitute/sting/gatk/walkers/indels/SomaticIndelDetectorWalker.java b/public/java/src/org/broadinstitute/sting/gatk/walkers/indels/SomaticIndelDetectorWalker.java
index 9705b265c..806a9c2a5 100644
--- a/public/java/src/org/broadinstitute/sting/gatk/walkers/indels/SomaticIndelDetectorWalker.java
+++ b/public/java/src/org/broadinstitute/sting/gatk/walkers/indels/SomaticIndelDetectorWalker.java
@@ -316,6 +316,7 @@ public class SomaticIndelDetectorWalker extends ReadWalker<Integer,Integer> {
         // first, the basic info
         headerInfo.add(new VCFHeaderLine("source", "SomaticIndelDetector"));
         headerInfo.add(new VCFHeaderLine("reference", getToolkit().getArguments().referenceFile.getName()));
+        headerInfo.add(new VCFFormatHeaderLine(VCFConstants.GENOTYPE_KEY, 1, VCFHeaderLineType.String, "Genotype"));
 
         // FORMAT and INFO fields
 //        headerInfo.addAll(VCFUtils.getSupportedHeaderStrings());