diff --git a/data_structure.py b/data_structure.py
index 34b1ba22ff..a921f1c459 100755
--- a/data_structure.py
+++ b/data_structure.py
@@ -1258,7 +1258,7 @@ def handel_update_call(node, context):
 @contextmanager
 def throttle_tree_update(node):
     """ usage
-    from sverchok.node_tree import throttle_tree_update
+    from sverchok.data_structure import throttle_tree_update
 
     inside your node, f.ex inside a wrapped_update that creates a socket