diff --git a/include/zenoh/api/ext/serialization.hxx b/include/zenoh/api/ext/serialization.hxx
index b235462..7ac81b6 100644
--- a/include/zenoh/api/ext/serialization.hxx
+++ b/include/zenoh/api/ext/serialization.hxx
@@ -278,6 +278,7 @@ inline bool __zenoh_deserialize_with_deserializer(zenoh::ext::Deserializer& dese
     __ZENOH_RESULT_CHECK(::ze_deserializer_deserialize_string(interop::as_copyable_c_ptr(deserializer), &s), err,
                          "Deserialization failure");
     value = std::string(::z_string_data(::z_loan(s)), ::z_string_len(::z_loan(s)));
+    ::z_drop(::z_move(s));
     return err == nullptr || *err == Z_OK;
 }