diff --git a/implementations/onblocks/datatreestore/DataTree.cpp b/implementations/onblocks/datatreestore/DataTree.cpp
index f1734e8a..caa53131 100644
--- a/implementations/onblocks/datatreestore/DataTree.cpp
+++ b/implementations/onblocks/datatreestore/DataTree.cpp
@@ -115,7 +115,6 @@ void DataTree::traverseLeaves(uint32_t beginIndex, uint32_t endIndex, function<v
   const_cast<const DataTree*>(this)->traverseLeaves(beginIndex, endIndex, [func](const DataLeafNode* leaf, uint32_t leafIndex) {
     func(const_cast<DataLeafNode*>(leaf), leafIndex);
   });
-  flush();
 }
 
 void DataTree::traverseLeaves(uint32_t beginIndex, uint32_t endIndex, function<void (const DataLeafNode*, uint32_t)> func) const {
@@ -196,7 +195,6 @@ void DataTree::resizeNumBytes(uint64_t newNumBytes) {
     }
     uint32_t newLastLeafSize = newNumBytes - (newNumLeaves-1)*_nodeStore->layout().maxBytesPerLeaf();
     LastLeaf(_rootNode.get())->resize(newLastLeafSize);
-    flush();
   }
   assert(newNumBytes == numStoredBytes());
 }
diff --git a/implementations/onblocks/datatreestore/DataTree.h b/implementations/onblocks/datatreestore/DataTree.h
index af047e41..0d726e13 100644
--- a/implementations/onblocks/datatreestore/DataTree.h
+++ b/implementations/onblocks/datatreestore/DataTree.h
@@ -35,6 +35,8 @@ public:
 
   uint64_t numStoredBytes() const;
 
+  void flush() const;
+
 private:
   mutable boost::shared_mutex _mutex;
   datanodestore::DataNodeStore *_nodeStore;
@@ -61,8 +63,6 @@ private:
   cpputils::optional_ownership_ptr<datanodestore::DataLeafNode> LastLeaf(datanodestore::DataNode *root);
   std::unique_ptr<datanodestore::DataLeafNode> LastLeaf(std::unique_ptr<datanodestore::DataNode> root);
 
-  void flush() const;
-
   DISALLOW_COPY_AND_ASSIGN(DataTree);
 };