diff --git a/codes/models/archs/discriminator_vgg_arch.py b/codes/models/archs/discriminator_vgg_arch.py
index 731f2ffc..3570523a 100644
--- a/codes/models/archs/discriminator_vgg_arch.py
+++ b/codes/models/archs/discriminator_vgg_arch.py
@@ -2,7 +2,7 @@ import torch
 import torch.nn as nn
 
 from models.archs.RRDBNet_arch import RRDB, RRDBWithBypass
-from models.archs.arch_util import ConvBnLelu, ConvGnLelu, ExpansionBlock, ConvGnSilu, ResidualBlockGN
+from models.archs.arch_util import ConvBnLelu, ConvGnLelu, ExpansionBlock, ConvGnSilu
 import torch.nn.functional as F
 from models.archs.SwitchedResidualGenerator_arch import gather_2d
 from models.archs.pyramid_arch import Pyramid
@@ -666,15 +666,10 @@ class PyramidDiscriminator(nn.Module):
     def __init__(self, in_nc, nf, block=ConvGnLelu):
         super(PyramidDiscriminator, self).__init__()
         self.initial_conv = block(in_nc, nf, kernel_size=3, stride=2, bias=True, norm=False, activation=True)
-        self.top_proc = nn.Sequential(*[ResidualBlockGN(nf),
-                                        ResidualBlockGN(nf),
-                                        ResidualBlockGN(nf)])
+        self.top_proc = nn.Sequential(*[ConvGnLelu(nf, nf, kernel_size=3, stride=2, bias=False, norm=True, activation=True)])
         self.pyramid = Pyramid(nf, depth=3, processing_convs_per_layer=2, processing_at_point=2,
                                scale_per_level=1.5, norm=True, return_outlevels=False)
-        self.bottom_proc = nn.Sequential(*[ResidualBlockGN(nf),
-                                       ResidualBlockGN(nf),
-                                       ResidualBlockGN(nf),
-                                       ResidualBlockGN(nf),
+        self.bottom_proc = nn.Sequential(*[
                                        ConvGnLelu(nf, nf // 2, kernel_size=1, activation=True, norm=True, bias=True),
                                        ConvGnLelu(nf // 2, nf // 4, kernel_size=1, activation=True, norm=True, bias=True),
                                        ConvGnLelu(nf // 4, 1, activation=False, norm=False, bias=True)])