diff --git a/crates/fluvio-smartmodule/src/input.rs b/crates/fluvio-smartmodule/src/input.rs
index 9c7c32edc95..72c93c57905 100644
--- a/crates/fluvio-smartmodule/src/input.rs
+++ b/crates/fluvio-smartmodule/src/input.rs
@@ -53,7 +53,7 @@ impl SmartModuleExtraParams {
 #[derive(Debug, Default, Clone, Encoder, Decoder, PartialEq, Eq)]
 pub struct Lookback {
     pub last: u64,
-    #[fluvio(min_version = SMARTMODULE_LOOKBACK_WITH_AGE_AND_BASE_TIMESTAMP)]
+    #[fluvio(min_version = 21)]
     pub age: Option<Duration>,
 }