diff --git a/fastreid/modeling/backbones/regnet/regnet.py b/fastreid/modeling/backbones/regnet/regnet.py
index 316921f..1f3f2f9 100644
--- a/fastreid/modeling/backbones/regnet/regnet.py
+++ b/fastreid/modeling/backbones/regnet/regnet.py
@@ -559,7 +559,7 @@ def build_regnet_backbone(cfg):
         '1600y': 'fastreid/modeling/backbones/regnet/regnety/RegNetY-1.6GF_dds_8gpu.yaml',
         '3200x': 'fastreid/modeling/backbones/regnet/regnetx/RegNetX-3.2GF_dds_8gpu.yaml',
         '3200y': 'fastreid/modeling/backbones/regnet/regnety/RegNetY-3.2GF_dds_8gpu.yaml',
-        '4000x': 'fastreid/modeling/backbones/regnet/regnety/RegNetX-4.0GF_dds_8gpu.yaml',
+        '4000x': 'fastreid/modeling/backbones/regnet/regnetx/RegNetX-4.0GF_dds_8gpu.yaml',
         '4000y': 'fastreid/modeling/backbones/regnet/regnety/RegNetY-4.0GF_dds_8gpu.yaml',
         '6400x': 'fastreid/modeling/backbones/regnet/regnetx/RegNetX-6.4GF_dds_8gpu.yaml',
         '6400y': 'fastreid/modeling/backbones/regnet/regnety/RegNetY-6.4GF_dds_8gpu.yaml',