diff --git a/public/java/src/org/broadinstitute/sting/gatk/walkers/phasing/PhaseByTransmission.java b/public/java/src/org/broadinstitute/sting/gatk/walkers/phasing/PhaseByTransmission.java
index 12a657d7c..713b4c8cc 100755
--- a/public/java/src/org/broadinstitute/sting/gatk/walkers/phasing/PhaseByTransmission.java
+++ b/public/java/src/org/broadinstitute/sting/gatk/walkers/phasing/PhaseByTransmission.java
@@ -234,8 +234,7 @@ public class PhaseByTransmission extends RodWalker<Integer, Integer> {
         finalGenotypes.add(father);
         finalGenotypes.add(child);
 
-        if (mother.isCalled() && !father.isCalled() && !child.isCalled()) {
-        } else {
+        if (mother.isCalled() && father.isCalled() && child.isCalled()) {
             ArrayList<Genotype> possibleMotherGenotypes = createAllThreeGenotypes(ref, alt, mother);
             ArrayList<Genotype> possibleFatherGenotypes = createAllThreeGenotypes(ref, alt, father);
             ArrayList<Genotype> possibleChildGenotypes = createAllThreeGenotypes(ref, alt, child);