diff --git a/pdseg/models/backbone/resnet.py b/pdseg/models/backbone/resnet.py
index 6d6cc196f62186c3a8919b1b08e1df22d05d307a..8a509272df55d98e3d30fb9061e7c21788727df7 100644
--- a/pdseg/models/backbone/resnet.py
+++ b/pdseg/models/backbone/resnet.py
@@ -133,7 +133,13 @@ class ResNet():
         if layers >= 50:
             for block in range(len(depth)):
                 for i in range(depth[block]):
-                    conv_name = "conv" + str(block + 2) + '_' + str(1 + i)
+                    if layers in [101, 152] and block == 2:
+                        if i == 0:
+                            conv_name = "res" + str(block + 2) + "a"
+                        else:
+                            conv_name = "res" + str(block + 2) + "b" + str(i)
+                    else:
+                        conv_name = "conv" + str(block + 2) + '_' + str(1 + i)
                     dilation_rate = get_dilated_rate(dilation_dict, block)
                     
                     if self.stem == 'pspnet':
@@ -172,7 +178,7 @@ class ResNet():
         else:
             for block in range(len(depth)):
                 for i in range(depth[block]):
-                    conv_name = "conv" + str(block + 2) + chr(97 + i)
+                    conv_name = "res" + str(block + 2) + chr(97 + i)
                     conv = self.basic_block(
                         input=conv,
                         num_filters=num_filters[block],