diff --git a/src/core_api.rs b/src/core_api.rs
index ed3086d..87e3338 100644
--- a/src/core_api.rs
+++ b/src/core_api.rs
@@ -95,6 +95,7 @@ pub(crate) trait IntoRawCommandPart {
 
 /// Generic data type representing all possible data types that mpv can return.
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(untagged)]
 pub enum MpvDataType {
     Array(Vec<MpvDataType>),
     Bool(bool),