diff --git a/rust/lance/src/dataset/scanner.rs b/rust/lance/src/dataset/scanner.rs
index e4a456d11d0..a9265517fe5 100644
--- a/rust/lance/src/dataset/scanner.rs
+++ b/rust/lance/src/dataset/scanner.rs
@@ -5811,6 +5811,7 @@ mod test {
         scan.filter("filterable > 5").unwrap();
         scan.nearest("vector", query_key.as_ref(), 1).unwrap();
         scan.minimum_nprobes(100);
+        scan.ef(100);
         scan.with_row_id();
 
         let batches = scan