diff --git a/llama_stack/apis/post_training/post_training.py b/llama_stack/apis/post_training/post_training.py
index 5385a39b0..8841dc1d0 100644
--- a/llama_stack/apis/post_training/post_training.py
+++ b/llama_stack/apis/post_training/post_training.py
@@ -30,7 +30,7 @@ class OptimizerType(Enum):
 @json_schema_type
 class DatasetFormat(Enum):
     instruct = "instruct"
-    chat = "dialog"
+    dialog = "dialog"
 
 
 @json_schema_type