diff --git a/openapi.yaml b/openapi.yaml
index 3f9e43f..c2cc0a0 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -2545,7 +2545,7 @@ paths:
                   description: Whether to use sequence packing for training.
                 max_seq_length:
                   type: integer
-                  description: Maximum sequence length to use for training.
+                  description: Maximum sequence length to use for training. If not specified, the maximum allowed for the model and training method will be used.
                 model:
                   type: string
                   description: Name of the base model to run fine-tune job on