diff --git a/configs/restorers/ttsr/ttsr-rec_x4_c64b16_g1_200k_CUFED.py b/configs/restorers/ttsr/ttsr-rec_x4_c64b16_g1_200k_CUFED.py
index ff36470712..ea5d52c79d 100644
--- a/configs/restorers/ttsr/ttsr-rec_x4_c64b16_g1_200k_CUFED.py
+++ b/configs/restorers/ttsr/ttsr-rec_x4_c64b16_g1_200k_CUFED.py
@@ -223,7 +223,7 @@
         scale=scale))
 
 # optimizer
-optimizers = dict(type='Adam', lr=1.e-4)
+optimizers = dict(generator=dict(type='Adam', lr=1.e-4))
 
 # learning policy
 total_iters = 200000