diff --git a/lib/terraforming/template/tf/ec2.erb b/lib/terraforming/template/tf/ec2.erb
index 9b428f47..1fbb977c 100644
--- a/lib/terraforming/template/tf/ec2.erb
+++ b/lib/terraforming/template/tf/ec2.erb
@@ -27,10 +27,10 @@ resource "aws_instance" "<%= module_name_of(instance) %>" {
     root_block_device {
         volume_type           = "<%= block_device.volume_type %>"
         volume_size           = <%= block_device.size %>
-<%- if block_device.iops -%>
+        delete_on_termination = <%= mapping.ebs.delete_on_termination %>
+<%- if block_device.volume_type == "io1" && block_device.iops -%>
         iops                  = <%= block_device.iops %>
 <%- end -%>
-        delete_on_termination = <%= mapping.ebs.delete_on_termination %>
     }
 <%- else -%>
     ebs_block_device {
@@ -38,10 +38,10 @@ resource "aws_instance" "<%= module_name_of(instance) %>" {
         snapshot_id           = "<%= block_device.snapshot_id %>"
         volume_type           = "<%= block_device.volume_type %>"
         volume_size           = <%= block_device.size %>
-<%- if block_device.iops -%>
+        delete_on_termination = <%= mapping.ebs.delete_on_termination %>
+<%- if block_device.volume_type == "io1" && block_device.iops -%>
         iops                  = <%= block_device.iops %>
 <%- end -%>
-        delete_on_termination = <%= mapping.ebs.delete_on_termination %>
     }
 <% end -%>
 
diff --git a/spec/lib/terraforming/resource/ec2_spec.rb b/spec/lib/terraforming/resource/ec2_spec.rb
index 9a140799..d9b53dda 100644
--- a/spec/lib/terraforming/resource/ec2_spec.rb
+++ b/spec/lib/terraforming/resource/ec2_spec.rb
@@ -278,7 +278,8 @@ module Resource
                 delete_on_termination: true
               }
             ],
-            volume_type: "standard",
+            volume_type: "io1",
+            iops: 24,
             encrypted: false
           }
         ]
@@ -332,9 +333,10 @@ module Resource
     source_dest_check           = true
 
     root_block_device {
-        volume_type           = "standard"
+        volume_type           = "io1"
         volume_size           = 8
         delete_on_termination = true
+        iops                  = 24
     }
 
     tags {
@@ -360,7 +362,6 @@ module Resource
         snapshot_id           = "snap-5678efgh"
         volume_type           = "gp2"
         volume_size           = 8
-        iops                  = 24
         delete_on_termination = true
     }