diff --git a/modules/deeplearning/srcnn_l1b_l2.py b/modules/deeplearning/srcnn_l1b_l2.py
index a8dcf555e85d729d2d7081adc3c1d5851bc0df5b..4aa56ac4d5a5e932d3cfb0c027bac116b57c8b78 100644
--- a/modules/deeplearning/srcnn_l1b_l2.py
+++ b/modules/deeplearning/srcnn_l1b_l2.py
@@ -709,7 +709,7 @@ def run_restore_static(directory, ckpt_dir):
 
 
 def run_evaluate_static(in_file, out_file, ckpt_dir):
-    N = 4
+    N = 8
     sub_y, sub_x = (N+1) * 128, (N+1) * 128
     y_0, x_0, = 2500 - int(sub_y/2), 2500 - int(sub_x/2)