diff --git a/monai/networks/blocks/aspp.py b/monai/networks/blocks/aspp.py
index d995d64796..41ed39c359 100644
--- a/monai/networks/blocks/aspp.py
+++ b/monai/networks/blocks/aspp.py
@@ -9,14 +9,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from typing import Sequence
+from typing import Optional, Sequence, Tuple, Union
 
 import torch
 import torch.nn as nn
 
 from monai.networks.blocks.convolutions import Convolution
 from monai.networks.layers import same_padding
-from monai.networks.layers.factories import Act, Conv, Norm
+from monai.networks.layers.factories import Conv
 
 
 class SimpleASPP(nn.Module):
@@ -37,8 +37,8 @@ def __init__(
         conv_out_channels: int,
         kernel_sizes: Sequence[int] = (1, 3, 3, 3),
         dilations: Sequence[int] = (1, 2, 4, 6),
-        norm_type=Norm.BATCH,
-        acti_type=Act.LEAKYRELU,
+        norm_type: Optional[Union[Tuple, str]] = "BATCH",
+        acti_type: Optional[Union[Tuple, str]] = "LEAKYRELU",
     ) -> None:
         """
         Args:
diff --git a/tests/test_simple_aspp.py b/tests/test_simple_aspp.py
index 89ca589c51..fbc8cb37d1 100644
--- a/tests/test_simple_aspp.py
+++ b/tests/test_simple_aspp.py
@@ -19,12 +19,12 @@
 
 TEST_CASES = [
     [  # 32-channel 2D, batch 7
-        {"spatial_dims": 2, "in_channels": 32, "conv_out_channels": 3},
+        {"spatial_dims": 2, "in_channels": 32, "conv_out_channels": 3, "norm_type": ("batch", {"affine": False})},
         (7, 32, 18, 20),
         (7, 12, 18, 20),
     ],
     [  # 4-channel 1D, batch 16
-        {"spatial_dims": 1, "in_channels": 4, "conv_out_channels": 8},
+        {"spatial_dims": 1, "in_channels": 4, "conv_out_channels": 8, "acti_type": ("PRELU", {"num_parameters": 32})},
         (16, 4, 17),
         (16, 32, 17),
     ],