diff --git a/python/mxnet/ndarray/contrib.py b/python/mxnet/ndarray/contrib.py
index ea51858c0b3b..ed70f8ccfc6e 100644
--- a/python/mxnet/ndarray/contrib.py
+++ b/python/mxnet/ndarray/contrib.py
@@ -723,13 +723,13 @@ def multi_mp_adabelief_update(weights, grads, mean, var, weights32, rescale_grad
     rescale_grad = _get_rescale_grad(rescale_grad, ctx=weights[0].context)
     temp_list = _flatten_list(zip(weights, grads, mean, var, weights32)) + [rescale_grad]
     return ndarray._internal._multi_mp_adabelief_update(*temp_list,
-                                                    out=out,
-                                                    num_weights=size,
-                                                    lrs=lrs,
-                                                    wds=wds,
-                                                    etas=etas,
-                                                    name=name,
-                                                    **kwargs)
+                                                        out=out,
+                                                        num_weights=size,
+                                                        lrs=lrs,
+                                                        wds=wds,
+                                                        etas=etas,
+                                                        name=name,
+                                                        **kwargs)
 
 def multi_lans_update(weights, grads, mean, var, step_count,
                       lrs, wds, out=None, num_tensors=0, **kwargs):