diff --git a/zenoh-ext/src/serialization.rs b/zenoh-ext/src/serialization.rs
index 61a3186955..4258829d52 100644
--- a/zenoh-ext/src/serialization.rs
+++ b/zenoh-ext/src/serialization.rs
@@ -45,9 +45,9 @@ pub trait Deserialize: Sized {
     }
 }
 
-pub fn z_serialize<T: Serialize>(t: &T) -> ZBytes {
+pub fn z_serialize<T: Serialize + ?Sized>(t: &T) -> ZBytes {
     let mut zbytes = ZBytes::new();
-    ZSerializer::new(&mut zbytes).serialize(t);
+    ZSerializer::new(&mut zbytes).serialize(&t);
     zbytes
 }