diff --git a/codes/data/LQGT_dataset.py b/codes/data/LQGT_dataset.py
index ca872e2e..62918b4a 100644
--- a/codes/data/LQGT_dataset.py
+++ b/codes/data/LQGT_dataset.py
@@ -218,7 +218,7 @@ class LQGTDataset(data.Dataset):
         if img_GAN is not None:
             img_GAN = torch.from_numpy(np.ascontiguousarray(np.transpose(img_GAN, (2, 0, 1)))).float()
 
-        lq_noise = torch.randn_like(img_LQ) * 5 / 255
+        lq_noise = torch.randn_like(img_LQ) * self.opt['lq_noise'] / 255
         img_LQ += lq_noise
 
         if LQ_path is None: