diff --git a/configs/control.yaml b/configs/control.yaml
index 4573304..7407242 100644
--- a/configs/control.yaml
+++ b/configs/control.yaml
@@ -37,7 +37,7 @@ agent:
   # input shape
   input_shape : [4]
   # state size := [state_size] + [input_shape]
-  state_size: 1
+  state_len: 1
   # action_size
   action_size: 2
   # transform the input