diff --git a/data/src/main/java/edu/harvard/hms/dbmi/avillach/hpds/data/genotype/FileBackedByteIndexedInfoStore.java b/data/src/main/java/edu/harvard/hms/dbmi/avillach/hpds/data/genotype/FileBackedByteIndexedInfoStore.java
index 1fa62142..18f5565c 100644
--- a/data/src/main/java/edu/harvard/hms/dbmi/avillach/hpds/data/genotype/FileBackedByteIndexedInfoStore.java
+++ b/data/src/main/java/edu/harvard/hms/dbmi/avillach/hpds/data/genotype/FileBackedByteIndexedInfoStore.java
@@ -1,10 +1,7 @@
 package edu.harvard.hms.dbmi.avillach.hpds.data.genotype;
 
 import java.io.*;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.TreeMap;
-import java.util.TreeSet;
+import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentSkipListSet;
 import java.util.stream.Collectors;