diff --git a/quickwit/quickwit-search/src/root.rs b/quickwit/quickwit-search/src/root.rs
index 53d9f133b5f..2ed4d000329 100644
--- a/quickwit/quickwit-search/src/root.rs
+++ b/quickwit/quickwit-search/src/root.rs
@@ -1190,12 +1190,12 @@ pub async fn search_plan(
         + warmup_info
             .terms_grouped_by_field
             .values()
-            .map(|terms| terms.len())
+            .map(|terms: &HashMap<tantivy::Term, bool>| terms.len())
             .sum::<usize>();
     let position_query_count = warmup_info
         .terms_grouped_by_field
         .values()
-        .map(|terms| {
+        .map(|terms: &HashMap<tantivy::Term, bool>| {
             terms
                 .values()
                 .filter(|load_position| **load_position)
diff --git a/quickwit/quickwit-search/src/search_response_rest.rs b/quickwit/quickwit-search/src/search_response_rest.rs
index 0b24b253887..e34895ac659 100644
--- a/quickwit/quickwit-search/src/search_response_rest.rs
+++ b/quickwit/quickwit-search/src/search_response_rest.rs
@@ -119,7 +119,9 @@ pub struct SearchPlanResponseRest {
     pub storage_requests: StorageRequestCount,
 }
 
-/// Number of expected storage requests, per request kind
+/// Number of expected storage requests, per request kind.
+///
+/// These figures do not take in account whether the data is already cached or not.
 #[derive(Serialize, Deserialize, PartialEq, Debug, Default)]
 pub struct StorageRequestCount {
     /// Number of split footer downloaded, always 1