diff --git a/rs/packages/db/src/lib.rs b/rs/packages/db/src/lib.rs
index e1f758d2..3da1dd9e 100644
--- a/rs/packages/db/src/lib.rs
+++ b/rs/packages/db/src/lib.rs
@@ -128,10 +128,10 @@ pub trait Model: Sized + Unpin + Send + Sync + Serialize + DeserializeOwned {
     Self::cl_as()
   }
 
-  async fn distinct_string(
+  async fn distinct_string<T: FromIterator<String>>(
     key: &str,
     filter: impl Into<Option<Document>> + Send,
-  ) -> MongoResult<Vec<String>> {
+  ) -> MongoResult<T> {
     let items = Self::cl().distinct(key, filter, None).await?;
     let set = items
       .into_iter()
@@ -144,11 +144,11 @@ pub trait Model: Sized + Unpin + Send + Sync + Serialize + DeserializeOwned {
     Ok(set)
   }
 
-  async fn distinct_string_with_session(
+  async fn distinct_string_with_session<T: FromIterator<String>>(
     key: &str,
     filter: impl Into<Option<Document>> + Send,
     session: &mut ClientSession,
-  ) -> MongoResult<Vec<String>> {
+  ) -> MongoResult<T> {
     let items = Self::cl()
       .distinct_with_session(key, filter, None, session)
       .await?;
diff --git a/rs/packages/db/src/models/deployment/mod.rs b/rs/packages/db/src/models/deployment/mod.rs
index 5b03638b..99d860e2 100644
--- a/rs/packages/db/src/models/deployment/mod.rs
+++ b/rs/packages/db/src/models/deployment/mod.rs
@@ -106,10 +106,7 @@ pub async fn check_now() -> Result<(), mongodb::error::Error> {
   };
 
   let active_deployment_ids: Vec<String> =
-    Deployment::distinct_string(crate::KEY_ID, active_filter)
-      .await?
-      .into_iter()
-      .collect();
+    Deployment::distinct_string(crate::KEY_ID, active_filter).await?;
 
   let mut to_close_deployment_ids = HashSet::<String>::new();
 
@@ -120,7 +117,7 @@ pub async fn check_now() -> Result<(), mongodb::error::Error> {
       StreamConnection::KEY_DEPLOYMENT_ID: { "$nin": &active_deployment_ids },
     };
 
-    let ids =
+    let ids: Vec<String> =
       StreamConnection::distinct_string(StreamConnection::KEY_DEPLOYMENT_ID, filter).await?;
 
     to_close_deployment_ids.extend(ids);
@@ -133,7 +130,7 @@ pub async fn check_now() -> Result<(), mongodb::error::Error> {
       StreamConnectionLite::KEY_DEPLOYMENT_ID: { "$nin": &active_deployment_ids },
     };
 
-    let ids =
+    let ids: Vec<String> =
       StreamConnectionLite::distinct_string(StreamConnection::KEY_DEPLOYMENT_ID, filter).await?;
 
     to_close_deployment_ids.extend(ids);
@@ -146,8 +143,9 @@ pub async fn check_now() -> Result<(), mongodb::error::Error> {
       WsStatsConnection::KEY_CURRENT_DEPLOYMENT_ID: { "$nin": &active_deployment_ids },
     };
 
-    let ids =
-      StreamConnectionLite::distinct_string(StreamConnection::KEY_DEPLOYMENT_ID, filter).await?;
+    let ids: Vec<String> =
+      WsStatsConnection::distinct_string(WsStatsConnection::KEY_CURRENT_DEPLOYMENT_ID, filter)
+        .await?;
 
     to_close_deployment_ids.extend(ids);
   }
@@ -157,9 +155,7 @@ pub async fn check_now() -> Result<(), mongodb::error::Error> {
   }
 
   let deployment_ids: Vec<String> = to_close_deployment_ids.into_iter().collect();
-  let deployment_filter = doc! {
-    Deployment::KEY_ID: { "$in": deployment_ids },
-  };
+  let deployment_filter = doc! { Deployment::KEY_ID: { "$in": deployment_ids } };
 
   let mut r = Deployment::cl().find(deployment_filter, None).await?;