diff --git a/ExportAdapter.js b/ExportAdapter.js
index 89cb6c5900..4030ae4098 100644
--- a/ExportAdapter.js
+++ b/ExportAdapter.js
@@ -232,7 +232,7 @@ ExportAdapter.prototype.handleRelationUpdates = function(className,
     }
 
     if (op.__op == 'Batch') {
-      for (x of op.ops) {
+      for (var x of op.ops) {
         process(x, key);
       }
     }
diff --git a/RestQuery.js b/RestQuery.js
index f136206af4..8c9bf712da 100644
--- a/RestQuery.js
+++ b/RestQuery.js
@@ -434,7 +434,7 @@ function includePath(config, auth, response, path) {
 function findPointers(object, path) {
   if (object instanceof Array) {
     var answer = [];
-    for (x of object) {
+    for (var x of object) {
       answer = answer.concat(findPointers(x, path));
     }
     return answer;
diff --git a/spec/helper.js b/spec/helper.js
index 255d61f810..761796a66e 100644
--- a/spec/helper.js
+++ b/spec/helper.js
@@ -153,7 +153,7 @@ function normalize(obj) {
     return '[' + obj.map(normalize).join(', ') + ']';
   }
   var answer = '{';
-  for (key of Object.keys(obj).sort()) {
+  for (var key of Object.keys(obj).sort()) {
     answer += key + ': ';
     answer += normalize(obj[key]);
     answer += ', ';
@@ -192,7 +192,7 @@ function mockFacebook() {
 
 function clearData() {
   var promises = [];
-  for (conn in DatabaseAdapter.dbConnections) {
+  for (var conn in DatabaseAdapter.dbConnections) {
     promises.push(DatabaseAdapter.dbConnections[conn].deleteEverything());
   }
   return Promise.all(promises);