diff --git a/playground/java/src/org/broadinstitute/sting/atk/ReadWalker.java b/playground/java/src/org/broadinstitute/sting/atk/ReadWalker.java
index d063ef976..bce2333c6 100755
--- a/playground/java/src/org/broadinstitute/sting/atk/ReadWalker.java
+++ b/playground/java/src/org/broadinstitute/sting/atk/ReadWalker.java
@@ -24,5 +24,5 @@ public interface ReadWalker<MapType, ReduceType> {
     ReduceType reduceInit();
     ReduceType reduce(MapType value, ReduceType sum);
 
-    void onTraveralDone();   
+    void onTraversalDone();
 }
diff --git a/playground/java/src/org/broadinstitute/sting/atk/modules/BaseQualityHistoWalker.java b/playground/java/src/org/broadinstitute/sting/atk/modules/BaseQualityHistoWalker.java
index 18e9a6bf1..5e8e86d3c 100755
--- a/playground/java/src/org/broadinstitute/sting/atk/modules/BaseQualityHistoWalker.java
+++ b/playground/java/src/org/broadinstitute/sting/atk/modules/BaseQualityHistoWalker.java
@@ -43,7 +43,7 @@ public class BaseQualityHistoWalker implements ReadWalker<Integer, Integer> {
         return value + sum;
     }
 
-    public void onTraveralDone() {
+    public void onTraversalDone() {
         int lastNonZero = -1;
         for ( int i = this.qualCounts.length-1; i >= 0; i-- ) {
             if ( this.qualCounts[i] > 0 ) {