diff --git a/quickwit/quickwit-search/src/leaf.rs b/quickwit/quickwit-search/src/leaf.rs
index 37f99a36241..1cbb7976fd4 100644
--- a/quickwit/quickwit-search/src/leaf.rs
+++ b/quickwit/quickwit-search/src/leaf.rs
@@ -844,28 +844,24 @@ fn remove_redundant_timestamp_range(
             }
         }
         (Bound::Unbounded, Some(_)) => Bound::Unbounded,
-        (timestamp, None) => timestamp,
+        (query_bound, None) => query_bound,
     };
-    let final_end_timestamp = match (
-        visitor.end_timestamp,
-        split.timestamp_end.map(DateTime::from_timestamp_secs),
-    ) {
-        (Bound::Included(query_ts), Some(split_ts)) => {
-            if query_ts < split_ts {
-                Bound::Included(query_ts)
-            } else {
-                Bound::Unbounded
-            }
-        }
-        (Bound::Excluded(query_ts), Some(split_ts)) => {
-            if query_ts <= split_ts {
-                Bound::Excluded(query_ts)
+    let final_end_timestamp = match (visitor.end_timestamp, split.timestamp_end) {
+        (
+            query_bound @ (Bound::Included(query_ts) | Bound::Excluded(query_ts)),
+            Some(split_end),
+        ) => {
+            // split.timestamp_end is the truncation of the highest timestamp in the split,
+            // so the actual known bound for the split is split.timestamp_end+1 (exclusive)
+            let split_end_exclusive = DateTime::from_timestamp_secs(split_end + 1);
+            if query_ts < split_end_exclusive {
+                query_bound
             } else {
                 Bound::Unbounded
             }
         }
         (Bound::Unbounded, Some(_)) => Bound::Unbounded,
-        (timestamp, None) => timestamp,
+        (query_bound, None) => query_bound,
     };
     if final_start_timestamp != Bound::Unbounded || final_end_timestamp != Bound::Unbounded {
         let range = RangeQuery {
@@ -1998,6 +1994,11 @@ mod tests {
         };
         remove_timestamp_test_case(&search_request, &split, None);
 
+        let expected_upper_inclusive = RangeQuery {
+            field: timestamp_field.to_string(),
+            lower_bound: Bound::Unbounded,
+            upper_bound: Bound::Included((time3 * S_TO_NS).into()),
+        };
         let search_request = SearchRequest {
             query_ast: serde_json::to_string(&QueryAst::Range(RangeQuery {
                 field: timestamp_field.to_string(),
@@ -2007,7 +2008,7 @@ mod tests {
             .unwrap(),
             ..SearchRequest::default()
         };
-        remove_timestamp_test_case(&search_request, &split, None);
+        remove_timestamp_test_case(&search_request, &split, Some(expected_upper_inclusive));
 
         let search_request = SearchRequest {
             query_ast: serde_json::to_string(&QueryAst::MatchAll).unwrap(),
@@ -2050,10 +2051,10 @@ mod tests {
             Some(expected_upper_exclusive.clone()),
         );
 
-        let expected_lower_exclusive = RangeQuery {
+        let expected_lower_excl_upper_incl = RangeQuery {
             field: timestamp_field.to_string(),
             lower_bound: Bound::Excluded((time2 * S_TO_NS).into()),
-            upper_bound: Bound::Unbounded,
+            upper_bound: Bound::Included((time3 * S_TO_NS).into()),
         };
         let search_request = SearchRequest {
             query_ast: serde_json::to_string(&QueryAst::Range(RangeQuery {
@@ -2067,10 +2068,22 @@ mod tests {
         remove_timestamp_test_case(
             &search_request,
             &split,
-            Some(expected_lower_exclusive.clone()),
+            Some(expected_lower_excl_upper_incl.clone()),
         );
+    }
+
+    #[test]
+    fn test_remove_timestamp_range_multiple_bounds() {
+        // When bounds are defined both in the AST and in the search request,
+        // make sure we take the most restrictive ones.
+        const S_TO_NS: i64 = 1_000_000_000;
+        let time1 = 1700001000;
+        let time2 = 1700002000;
+        let time3 = 1700003000;
+        let time4 = 1700004000;
+
+        let timestamp_field = "timestamp".to_string();
 
-        // we take the most restrictive bounds
         let split = SplitIdAndFooterOffsets {
             timestamp_start: Some(time1),
             timestamp_end: Some(time4),
@@ -2113,10 +2126,10 @@ mod tests {
         };
         remove_timestamp_test_case(&search_request, &split, Some(expected_upper_2_inc));
 
-        let expected_lower_3 = RangeQuery {
+        let expected_lower_3_upper_4 = RangeQuery {
             field: timestamp_field.to_string(),
             lower_bound: Bound::Included((time3 * S_TO_NS).into()),
-            upper_bound: Bound::Unbounded,
+            upper_bound: Bound::Included((time4 * S_TO_NS).into()),
         };
 
         let search_request = SearchRequest {
@@ -2130,7 +2143,11 @@ mod tests {
             end_timestamp: Some(time4 + 1),
             ..SearchRequest::default()
         };
-        remove_timestamp_test_case(&search_request, &split, Some(expected_lower_3.clone()));
+        remove_timestamp_test_case(
+            &search_request,
+            &split,
+            Some(expected_lower_3_upper_4.clone()),
+        );
 
         let search_request = SearchRequest {
             query_ast: serde_json::to_string(&QueryAst::Range(RangeQuery {
@@ -2143,7 +2160,7 @@ mod tests {
             end_timestamp: Some(time4 + 1),
             ..SearchRequest::default()
         };
-        remove_timestamp_test_case(&search_request, &split, Some(expected_lower_3));
+        remove_timestamp_test_case(&search_request, &split, Some(expected_lower_3_upper_4));
 
         let mut search_request = SearchRequest {
             query_ast: serde_json::to_string(&QueryAst::MatchAll).unwrap(),
diff --git a/quickwit/rest-api-tests/scenarii/qw_search_api/0001_ts_range.yaml b/quickwit/rest-api-tests/scenarii/qw_search_api/0001_ts_range.yaml
index dc9765b634e..7dae4d645da 100644
--- a/quickwit/rest-api-tests/scenarii/qw_search_api/0001_ts_range.yaml
+++ b/quickwit/rest-api-tests/scenarii/qw_search_api/0001_ts_range.yaml
@@ -40,3 +40,9 @@ params:
   query: "auto_date:>=2023-05-25T00:00:00Z AND auto_date:<2023-05-26T00:00:00Z"
 expected:
   num_hits: 2
+---
+endpoint: millisec/search
+params:
+  query: "ts:>=2022-12-16T10:00:57.000Z AND ts:<=2022-12-16T10:00:57.000Z"
+expected:
+  num_hits: 1
\ No newline at end of file
diff --git a/quickwit/rest-api-tests/scenarii/qw_search_api/_setup.quickwit.yaml b/quickwit/rest-api-tests/scenarii/qw_search_api/_setup.quickwit.yaml
index b333ed3c86a..e410ecd96c0 100644
--- a/quickwit/rest-api-tests/scenarii/qw_search_api/_setup.quickwit.yaml
+++ b/quickwit/rest-api-tests/scenarii/qw_search_api/_setup.quickwit.yaml
@@ -98,3 +98,31 @@ ndjson:
   - {"text_raw": "indexed with raw tokenizer dashes"}
   - {"text_fast": "fast-text-value-dashes"}
   - {"text_fast": "fast text value whitespaces"}
+---
+method: DELETE
+endpoint: indexes/millisec
+status_code: null
+---
+method: POST
+endpoint: indexes/
+json:
+  version: "0.7"
+  index_id: millisec
+  doc_mapping:
+    timestamp_field: ts
+    mode: strict
+    field_mappings:
+      - name: ts
+        type: datetime
+        fast: true
+        input_formats: ["rfc3339"]
+        fast_precision: milliseconds
+---
+method: POST
+endpoint: millisec/ingest
+params:
+  commit: force
+ndjson:
+  - {"ts": "2022-12-16T10:00:56.297Z"}
+  - {"ts": "2022-12-16T10:00:57.000Z"}
+  - {"ts": "2022-12-16T10:00:57.297Z"}
\ No newline at end of file
diff --git a/quickwit/rest-api-tests/scenarii/qw_search_api/_teardown.quickwit.yaml b/quickwit/rest-api-tests/scenarii/qw_search_api/_teardown.quickwit.yaml
index 56cd2bda8a9..ebfa1c4931b 100644
--- a/quickwit/rest-api-tests/scenarii/qw_search_api/_teardown.quickwit.yaml
+++ b/quickwit/rest-api-tests/scenarii/qw_search_api/_teardown.quickwit.yaml
@@ -3,3 +3,6 @@ endpoint: indexes/simple
 ---
 method: DELETE
 endpoint: indexes/nested
+---
+method: DELETE
+endpoint: indexes/millisec
\ No newline at end of file