diff --git a/models.py b/models.py
index 18bcb465..20ef978d 100755
--- a/models.py
+++ b/models.py
@@ -93,8 +93,8 @@ def create_modules(module_defs, img_size, arc):
                     b = [7, -0.1]
 
                 bias = module_list[-1][0].bias.view(len(mask), -1)  # 255 to 3x85
-                bias[:, 4] += b[0]  # obj
-                bias[:, 5:] += b[1]  # cls
+                bias[:, 4] += b[0] - bias[:, 4].mean()  # obj
+                bias[:, 5:] += b[1] - bias[:, 5:].mean()  # cls
                 # bias = torch.load('weights/yolov3-spp.bias.pt')[yolo_index]  # list of tensors [3x85, 3x85, 3x85]
                 module_list[-1][0].bias = torch.nn.Parameter(bias.view(-1))
                 # utils.print_model_biases(model)