diff --git a/silkworm/node/db/mdbx.cpp b/silkworm/node/db/mdbx.cpp
index 9513666d46..9302fce300 100644
--- a/silkworm/node/db/mdbx.cpp
+++ b/silkworm/node/db/mdbx.cpp
@@ -264,7 +264,7 @@ PooledCursor::PooledCursor() {
     }
 }
 
-PooledCursor::PooledCursor(RWTxn& txn, ::mdbx::map_handle map) {
+PooledCursor::PooledCursor(ROTxn& txn, ::mdbx::map_handle map) {
     handle_ = handles_pool_.acquire();
     if (!handle_) {
         handle_ = ::mdbx_cursor_create(nullptr);
diff --git a/silkworm/node/db/mdbx.hpp b/silkworm/node/db/mdbx.hpp
index 6c49fbb4e0..41504ef4c9 100644
--- a/silkworm/node/db/mdbx.hpp
+++ b/silkworm/node/db/mdbx.hpp
@@ -386,8 +386,9 @@ size_t max_value_size_for_leaf_page(const ::mdbx::txn& txn, size_t key_size);
 class PooledCursor : public RWCursorDupSort, protected ::mdbx::cursor {
   public:
     explicit PooledCursor();
-    explicit PooledCursor(RWTxn& txn, ::mdbx::map_handle map);
+    explicit PooledCursor(ROTxn& txn, ::mdbx::map_handle map);
     explicit PooledCursor(::mdbx::txn& txn, const MapConfig& config);
+    explicit PooledCursor(ROTxn& txn, const MapConfig& config) : PooledCursor(*txn, config) {}
     ~PooledCursor() override;
 
     PooledCursor(PooledCursor&& other) noexcept;