diff --git a/public/java/src/org/broadinstitute/sting/gatk/walkers/genotyper/UnifiedGenotyper.java b/public/java/src/org/broadinstitute/sting/gatk/walkers/genotyper/UnifiedGenotyper.java
index 8df501e1b..79ec08558 100755
--- a/public/java/src/org/broadinstitute/sting/gatk/walkers/genotyper/UnifiedGenotyper.java
+++ b/public/java/src/org/broadinstitute/sting/gatk/walkers/genotyper/UnifiedGenotyper.java
@@ -127,8 +127,19 @@ public class UnifiedGenotyper extends LocusWalker<List<VariantCallContext>, Unif
     @ArgumentCollection
     protected DbsnpArgumentCollection dbsnp = new DbsnpArgumentCollection();
     public RodBinding<VariantContext> getDbsnpRodBinding() { return dbsnp.dbsnp; }
+
+    /**
+     * If a call overlaps with a record from the provided comp track, the INFO field will be annotated
+     *  as such in the output with the track name (e.g. -comp:FOO will have 'FOO' in the INFO field).
+     *  Records that are filtered in the comp track will be ignored.
+     *  Note that 'dbSNP' has been special-cased (see the --dbsnp argument).
+     */
+    @Input(fullName="comp", shortName = "comp", doc="comparison VCF file", required=false)
+    public List<RodBinding<VariantContext>> comps = Collections.emptyList();
+    public List<RodBinding<VariantContext>> getCompRodBindings() { return comps; }
+
+    // The following are not used by the Unified Genotyper
     public RodBinding<VariantContext> getSnpEffRodBinding() { return null; }
-    public List<RodBinding<VariantContext>> getCompRodBindings() { return Collections.emptyList(); }
     public List<RodBinding<VariantContext>> getResourceRodBindings() { return Collections.emptyList(); }
     public boolean alwaysAppendDbsnpId() { return false; }
 
diff --git a/public/java/test/org/broadinstitute/sting/gatk/walkers/genotyper/UnifiedGenotyperIntegrationTest.java b/public/java/test/org/broadinstitute/sting/gatk/walkers/genotyper/UnifiedGenotyperIntegrationTest.java
index 78167e7e9..e7c10a623 100755
--- a/public/java/test/org/broadinstitute/sting/gatk/walkers/genotyper/UnifiedGenotyperIntegrationTest.java
+++ b/public/java/test/org/broadinstitute/sting/gatk/walkers/genotyper/UnifiedGenotyperIntegrationTest.java
@@ -142,6 +142,14 @@ public class UnifiedGenotyperIntegrationTest extends WalkerTest {
         executeTest("test SLOD", spec);
     }
 
+    @Test
+    public void testCompTrack() {
+        WalkerTest.WalkerTestSpec spec = new WalkerTest.WalkerTestSpec(
+                "-T UnifiedGenotyper -R " + b36KGReference + " -NO_HEADER -glm BOTH -comp:FOO " + b36dbSNP129 + " -I " + validationDataLocation + "NA12878.1kg.p2.chr1_10mb_11_mb.SLX.bam -o %s -L 1:10,000,000-10,010,000", 1,
+                Arrays.asList("71251d8893649ea9abd5d9aa65739ba1"));
+        executeTest("test using comp track", spec);
+    }
+
     @Test
     public void testOutputParameter() {
         HashMap<String, String> e = new HashMap<String, String>();