diff --git a/skl2onnx/operator_converters/nearest_neighbours.py b/skl2onnx/operator_converters/nearest_neighbours.py
index f5f69b094..74378c840 100644
--- a/skl2onnx/operator_converters/nearest_neighbours.py
+++ b/skl2onnx/operator_converters/nearest_neighbours.py
@@ -138,7 +138,7 @@ def onnx_nearest_neighbors_indices_k(
         if keep_distances:
             return (
                 node[1],
-                OnnxMul(node[0], np.array([-1], dtype=dtype), op_version=op_version),
+                node[0]
             )
     if keep_distances:
         return (node[1], node[0])