diff --git a/util/test-10.ndb b/util/test-10.ndb
index 844afda..76e86c8 100644
--- a/util/test-10.ndb
+++ b/util/test-10.ndb
@@ -1,5 +1,5 @@
 Lib_Open 0
-DS_Open
+DS_Open 0
 Index_List_Open 0-0
 DS_Value_Add 1-10 0
 DS_Value_Find 1-10
diff --git a/util/test-100K.ndb b/util/test-100K.ndb
index 11a9917..a0279e7 100644
--- a/util/test-100K.ndb
+++ b/util/test-100K.ndb
@@ -1,5 +1,5 @@
 Lib_Open 0
-DS_Open
+DS_Open 0
 Index_List_Open 0-0
 DS_Value_Add 1-100000 0
 DS_Value_Find 49900-50100
diff --git a/util/test-10K.ndb b/util/test-10K.ndb
index 9a7b38f..088f6e4 100644
--- a/util/test-10K.ndb
+++ b/util/test-10K.ndb
@@ -1,5 +1,5 @@
 Lib_Open 0
-DS_Open
+DS_Open 0
 Index_List_Open 0-0
 DS_Value_Add 1-10000 0
 DS_Value_Find 4000-6000
diff --git a/util/test-1M.ndb b/util/test-1M.ndb
index a51be7c..5ccf43c 100644
--- a/util/test-1M.ndb
+++ b/util/test-1M.ndb
@@ -1,5 +1,5 @@
 Lib_Open 0
-DS_Open
+DS_Open 0
 Index_List_Open 0-0
 DS_Value_Add 1-1000000 0
 DS_Value_Find 499990-500010
diff --git a/util/test-error.ndb b/util/test-error.ndb
index 49a07c5..df0ddbe 100644
--- a/util/test-error.ndb
+++ b/util/test-error.ndb
@@ -1,11 +1,11 @@
-DS_Open
+DS_Open 0
 Lib_Open 0
-DS_Open
+DS_Open 0
 Index_List_Open 0-0
 DS_Value_Add 1-10 0
 Lib_Close
 Lib_Open 1
-DS_Open
+DS_Open 0
 Index_List_Open 0-0
 DS_Value_Add 1-10 0
 Index_Value_Break 0-0 0