diff --git a/src/connector/src/source/nats/mod.rs b/src/connector/src/source/nats/mod.rs
index 2ef5a1bc0ed81..3e8cc57bc1da8 100644
--- a/src/connector/src/source/nats/mod.rs
+++ b/src/connector/src/source/nats/mod.rs
@@ -30,13 +30,10 @@ pub struct NatsProperties {
     #[serde(flatten)]
     pub common: NatsCommon,
 
-    #[serde(rename = "scan.startup.mode", alias = "nats.scan.startup.mode")]
+    #[serde(rename = "scan.startup.mode")]
     pub scan_startup_mode: Option<String>,
 
-    #[serde(
-        rename = "scan.startup.timestamp_millis",
-        alias = "nats.scan.startup.timestamp_millis"
-    )]
+    #[serde(rename = "scan.startup.timestamp_millis")]
     pub start_time: Option<String>,
 }