diff --git a/src/core/instance/render-helpers/render-list.js b/src/core/instance/render-helpers/render-list.js
index abe99db4d6d..cdb9e86a03c 100644
--- a/src/core/instance/render-helpers/render-list.js
+++ b/src/core/instance/render-helpers/render-list.js
@@ -26,10 +26,25 @@ export function renderList (
     }
   } else if (isObject(val)) {
     keys = Object.keys(val)
-    ret = new Array(keys.length)
-    for (i = 0, l = keys.length; i < l; i++) {
-      key = keys[i]
-      ret[i] = render(val[key], key, i)
+    if (keys.length === 0 && val.toString().indexOf('Iterator') > -1) {
+      ret = []
+      i = 0
+      while (true) {
+        if (typeof val.next !== 'function') {
+          break
+        }
+        const next = val.next()
+        if (next.done) {
+          break
+        }
+        ret.push(render(next.value, i++))
+      }
+    } else {
+      ret = new Array(keys.length)
+      for (i = 0, l = keys.length; i < l; i++) {
+        key = keys[i]
+        ret[i] = render(val[key], key, i)
+      }
     }
   }
   if (isDef(ret)) {