diff --git a/src/cache/models.rs b/src/cache/models.rs
index aa38c82..ea333f3 100644
--- a/src/cache/models.rs
+++ b/src/cache/models.rs
@@ -166,7 +166,7 @@ mod question {
     #[derive(Debug, Default, Serialize, Deserialize)]
     pub struct MetaData {
         pub name: Option<String>,
-        pub params: Vec<Param>,
+        pub params: Option<Param>,
         pub r#return: Return,
     }