diff --git a/src/mkindex_algo.hpp b/src/mkindex_algo.hpp
index 2737712e5..49e17ca8c 100644
--- a/src/mkindex_algo.hpp
+++ b/src/mkindex_algo.hpp
@@ -603,7 +603,7 @@ auto generateIndex(TStringSet & seqs, LambdaIndexerOptions const & options)
     myPrint(options, 1, "Generating Index...");
     double s = sysTime();
 
-    TIndex index{seqs | bio::views::to_rank | fmindex_collection::add_sentinels, 5};
+    TIndex index{seqs | bio::views::to_rank | fmindex_collection::add_sentinels, /*samplingRate*/ 5, options.threads};
 
     double e = sysTime() - s;
     myPrint(options, 1, " done.\n");
diff --git a/src/search_algo.hpp b/src/search_algo.hpp
index fad81a80f..1579e165a 100644
--- a/src/search_algo.hpp
+++ b/src/search_algo.hpp
@@ -470,11 +470,9 @@ inline void search_impl(LocalDataHolder<TGlobalHolder> & lH, TSeed && seed)
 {
     if constexpr (TGlobalHolder::c_dbIndexType == DbIndexType::FM_INDEX)
     {
-        //!TODO a reversed FMIndex is used, so the query need to be reversed, so we search from left to right
-        //      This is a conceptual TODO for fmindex_collection library
         fmindex_collection::search_backtracking_with_buffers::search(
           lH.gH.indexFile.index,
-          seed | std::views::reverse | bio::views::to_rank | fmindex_collection::add_sentinel,
+          seed | bio::views::to_rank | fmindex_collection::add_sentinel,
           lH.searchOpts.maxSeedDist,
           lH.cursor_tmp_buffer,
           lH.cursor_tmp_buffer2,
diff --git a/submodules/fmindex-collection b/submodules/fmindex-collection
index 488a9979c..bbc0900f1 160000
--- a/submodules/fmindex-collection
+++ b/submodules/fmindex-collection
@@ -1 +1 @@
-Subproject commit 488a9979cce4c3dc1c49e86e70ab78d2d871b3ba
+Subproject commit bbc0900f1c7fd41b946802689a2256f7fab711c7