diff --git a/lib/core/loss.py b/lib/core/loss.py
index 7dbeaa925f..945eba8cd0 100644
--- a/lib/core/loss.py
+++ b/lib/core/loss.py
@@ -139,7 +139,7 @@ def _forward_impl(self, predictions, targets, shapes, model):
         liou_ll *= cfg.LOSS.LL_IOU_GAIN * self.lambdas[5]
 
         
-        if cfg.TRAIN.DET_ONLY or cfg.TRAIN.ENC_DET_ONLY or cfg.TRAIN.DET_ONLY:
+        if cfg.TRAIN.DET_ONLY or cfg.TRAIN.ENC_DET_ONLY:
             lseg_da = 0 * lseg_da
             lseg_ll = 0 * lseg_ll
             liou_ll = 0 * liou_ll