diff --git a/moto/ec2/models.py b/moto/ec2/models.py
index cc333e790..11ad8b101 100755
--- a/moto/ec2/models.py
+++ b/moto/ec2/models.py
@@ -720,6 +720,7 @@ class InstanceBackend(object):
         instance_tags = tags.get('instance', {})
 
         for index in range(count):
+            kwargs["ami_launch_index"] = index
             new_instance = Instance(
                 self,
                 image_id,