diff --git a/usql/settings.cpp b/usql/settings.cpp
index 500d5db..86ca20e 100644
--- a/usql/settings.cpp
+++ b/usql/settings.cpp
@@ -12,7 +12,7 @@ std::vector<std::pair<std::string, std::string>> Settings::m_settings =
 	      std::make_pair("BOOL_TRUE_LITERAL", "Y"),
 	      std::make_pair("BOOL_FALSE_LITERAL", "N"),
           std::make_pair("DOUBLE_FORMAT", "%.2f"),
-	      std::make_pair("USE_INDEXSCAN", "N"),
+	      std::make_pair("USE_INDEXSCAN", "Y"),
 	      std::make_pair("MAX_PARALLELISM", "1") };		// values "AUTO" or number of workers; when number negative means std::thread::hardware_concurrency() - number 
 
 
diff --git a/usql/usql_dml.cpp b/usql/usql_dml.cpp
index ed3dc6b..444734a 100644
--- a/usql/usql_dml.cpp
+++ b/usql/usql_dml.cpp
@@ -35,7 +35,7 @@ std::pair<bool, std::vector<rowid_t>> USql::look_for_usable_index(const Node *wh
 					if (used_index != nullptr) {
 						std::vector<rowid_t> rowids = used_index->search((ValueNode *)ron->right.get());
 #ifndef NDEBUG
-						std::cout << "using index " << table->m_name << "(" << used_index->get_column_name() << "), " << rowids.size() << "/" << table->rows_count()  << std::endl;
+						std::cerr << "using index " << table->m_name << "(" << used_index->get_column_name() << "), " << rowids.size() << "/" << table->rows_count()  << std::endl;
 #endif
 						return std::make_pair(true, rowids);
 					}