diff --git a/configs/dota/_base_/s2anet_reader.yml b/configs/dota/_base_/s2anet_reader.yml
index b28dd5aad92ac6ae9f27ae0cfb759a153c55b2e7..a96dc2adca07dc592216cfcdb38e91fde03ce23d 100644
--- a/configs/dota/_base_/s2anet_reader.yml
+++ b/configs/dota/_base_/s2anet_reader.yml
@@ -29,6 +29,8 @@ EvalReader:
 
 
 TestReader:
+  inputs_def:
+    image_shape: [3, 1024, 1024]
   sample_transforms:
   - Decode: {}
   - Resize: {interp: 2, target_size: [1024, 1024], keep_ratio: True}