diff --git a/hyracks-storage-am-btree/src/test/java/edu/uci/ics/hyracks/storage/am/btree/BTreeTest.java b/hyracks-storage-am-btree/src/test/java/edu/uci/ics/hyracks/storage/am/btree/BTreeTest.java
index b1bec61..1fb08e4 100644
--- a/hyracks-storage-am-btree/src/test/java/edu/uci/ics/hyracks/storage/am/btree/BTreeTest.java
+++ b/hyracks-storage-am-btree/src/test/java/edu/uci/ics/hyracks/storage/am/btree/BTreeTest.java
@@ -46,7 +46,7 @@
 import edu.uci.ics.hyracks.storage.am.btree.impls.MultiComparator;
 import edu.uci.ics.hyracks.storage.am.btree.impls.RangePredicate;
 import edu.uci.ics.hyracks.storage.am.btree.types.Int32Accessor;
-import edu.uci.ics.hyracks.storage.am.btree.types.StringAccessor;
+import edu.uci.ics.hyracks.storage.am.btree.types.UTF8StringAccessor;
 import edu.uci.ics.hyracks.storage.common.buffercache.BufferCache;
 import edu.uci.ics.hyracks.storage.common.buffercache.ClockPageReplacementStrategy;
 import edu.uci.ics.hyracks.storage.common.buffercache.IBufferCache;
@@ -413,8 +413,8 @@
         IBTreeMetaDataFrame metaFrame = metaFrameFactory.getFrame();   
 
     	IFieldAccessor[] fields = new IFieldAccessor[2];
-    	fields[0] = new StringAccessor(); // key        
-    	fields[1] = new StringAccessor(); // value
+    	fields[0] = new UTF8StringAccessor(); // key        
+    	fields[1] = new UTF8StringAccessor(); // value
 
     	int keyLen = 1;
     	IBinaryComparator[] cmps = new IBinaryComparator[keyLen];
@@ -546,8 +546,8 @@
         IBTreeMetaDataFrame metaFrame = metaFrameFactory.getFrame();   
         
         IFieldAccessor[] fields = new IFieldAccessor[2];
-        fields[0] = new StringAccessor(); // key        
-        fields[1] = new StringAccessor(); // value
+        fields[0] = new UTF8StringAccessor(); // key        
+        fields[1] = new UTF8StringAccessor(); // value
 
         int keyLen = 1;
         IBinaryComparator[] cmps = new IBinaryComparator[keyLen];