diff --git a/python/paddle/nn/functional/pooling.py b/python/paddle/nn/functional/pooling.py
index de87792170aae..01ddf05fb82d2 100755
--- a/python/paddle/nn/functional/pooling.py
+++ b/python/paddle/nn/functional/pooling.py
@@ -1144,7 +1144,6 @@ def max_pool3d(x,
                                           return_mask=True)
             # output.shape [None, 3, 16, 16, 16], max_indices.shape [None, 3, 16, 16, 16],
     """
-    
     kernel_size = utils.convert_to_list(kernel_size, 3, 'pool_size')
     if stride is None:
         stride = kernel_size