1 files changed, 1 insertions, 1 deletions
diff --git a/jstests/replsets/initial_sync4.js b/jstests/replsets/initial_sync4.js
index 1860db6d1c8..35dbd632715 100644
--- a/jstests/replsets/initial_sync4.js
+++ b/jstests/replsets/initial_sync4.js
@@ -17,7 +17,7 @@
 
     jsTestLog("2. Insert some data");
     var N = 5000;
-    mc.createIndex({x: 1});
+    mc.ensureIndex({x: 1});
     var bulk = mc.initializeUnorderedBulkOp();
     for (var i = 0; i < N; ++i) {
         bulk.insert({_id: i, x: i, a: {}});