diff --git a/unit-tests/btree_t.cc b/unit-tests/btree_t.cc
index ff86dbb..3ec2aa4 100644
--- a/unit-tests/btree_t.cc
+++ b/unit-tests/btree_t.cc
@@ -34,7 +34,7 @@ namespace {
 
 	transaction_manager::ptr
 	create_tm() {
-		block_manager<>::ptr bm(new block_manager<>("./test.data", NR_BLOCKS, 4, true));
+		block_manager<>::ptr bm(new block_manager<>("./test.data", NR_BLOCKS, 4, block_io<>::READ_WRITE));
 		space_map::ptr sm(new core_map(NR_BLOCKS));
 		transaction_manager::ptr tm(new transaction_manager(bm, sm));
 		return tm;
diff --git a/unit-tests/space_map_t.cc b/unit-tests/space_map_t.cc
index 7f76513..6391eef 100644
--- a/unit-tests/space_map_t.cc
+++ b/unit-tests/space_map_t.cc
@@ -38,7 +38,7 @@ namespace {
 	transaction_manager::ptr
 	create_tm() {
 		block_manager<>::ptr bm(
-			new block_manager<>("./test.data", NR_BLOCKS, MAX_LOCKS, true));
+			new block_manager<>("./test.data", NR_BLOCKS, MAX_LOCKS, block_io<>::READ_WRITE));
 		space_map::ptr sm(new core_map(NR_BLOCKS));
 		transaction_manager::ptr tm(
 			new transaction_manager(bm, sm));
diff --git a/unit-tests/transaction_manager_t.cc b/unit-tests/transaction_manager_t.cc
index 74480af..c857f56 100644
--- a/unit-tests/transaction_manager_t.cc
+++ b/unit-tests/transaction_manager_t.cc
@@ -34,7 +34,8 @@ namespace {
 
 	transaction_manager::ptr
 	create_tm() {
-		block_manager<>::ptr bm(new block_manager<>("./test.data", NR_BLOCKS, MAX_HELD_LOCKS, true));
+		block_manager<>::ptr bm(
+			new block_manager<>("./test.data", NR_BLOCKS, MAX_HELD_LOCKS, block_io<>::READ_WRITE));
 		space_map::ptr sm(new core_map(NR_BLOCKS));
 		transaction_manager::ptr tm(new transaction_manager(bm, sm));
 		tm->get_sm()->inc(0);