diff --git a/utils/utils.py b/utils/utils.py
index 7448496c..ba22e6b2 100755
--- a/utils/utils.py
+++ b/utils/utils.py
@@ -436,7 +436,7 @@ def compute_loss(p, targets, model):  # predictions, targets, model
     lcls *= h['cls']
     if red == 'sum':
         lbox *= 3 / ng
-        lobj *= 3 / np
+        lobj *= 3 / np * 2
         lcls *= 3 / ng / model.nc
 
     loss = lbox + lobj + lcls