diff --git a/llama_stack/strong_typing/schema.py b/llama_stack/strong_typing/schema.py
index e755b4c12..1427c22e6 100644
--- a/llama_stack/strong_typing/schema.py
+++ b/llama_stack/strong_typing/schema.py
@@ -479,7 +479,7 @@ class JsonSchemaGenerator:
             return ret
         elif origin_type is Literal:
             if len(typing.get_args(typ)) != 1:
-                print(f"Literal type {typ} has {len(typing.get_args(typ))} arguments")
+                raise ValueError(f"Literal type {typ} has {len(typing.get_args(typ))} arguments")
             (literal_value,) = typing.get_args(typ)  # unpack value of literal type
             schema = self.type_to_schema(type(literal_value))
             schema["const"] = literal_value