diff --git a/btree.cpp b/btree.cpp
index 9b57312..610dedd 100644
--- a/btree.cpp
+++ b/btree.cpp
@@ -119,6 +119,17 @@
 } // bTree::setNodes
 
 void
+bTree::setHeight(uInt32 value) {
+  info->height = value;
+
+  if (!memoryTree) {
+    if (!vfs->fSeek((int)&info->height - (int)info)) exit(42);
+    if (!vfs->fWrite(&info->height, sizeof(info->height))) exit(42);
+  } // if not memoryTree
+  return;
+} // bTree::setHeight
+
+void
 bTree::setNull(uPtr & u) {
   u.offset = 0;
 } // bTree::setNull
diff --git a/btree.h b/btree.h
index 0e659c3..a1cc495 100644
--- a/btree.h
+++ b/btree.h
@@ -25,6 +25,7 @@
 
   void     setFirstDeleted(uPtr);
   void     setNodes(uInt32);
+  void     setHeight(uInt32);
   void     setNull(uPtr &);
  public:
            bTree(char *, uInt32, treeTypes, bTreeVFS *);