diff --git a/loxi_ir/ir.py b/loxi_ir/ir.py
index 6a053c6..c8ca04d 100644
--- a/loxi_ir/ir.py
+++ b/loxi_ir/ir.py
@@ -440,10 +440,15 @@
             superclass_name = None
             superclass = None
 
+        ofc_members = []
+        for m in orig_fe.members:
+            if not isinstance(m, frontend_ir.OFDataMember) and not isinstance(m, frontend_ir.OFPadMember):
+                ofc_members.append(m)
+
         fe = frontend_ir.OFClass(
             name=name,
             superclass=superclass_name,
-            members=[m for m in orig_fe.members if not isinstance(m, frontend_ir.OFDataMember)],
+            members=ofc_members,
             virtual=orig_fe.virtual,
             params={})
 
diff --git a/openflow_input/standard-1.3 b/openflow_input/standard-1.3
index 764ad21..a91c859 100644
--- a/openflow_input/standard-1.3
+++ b/openflow_input/standard-1.3
@@ -758,7 +758,6 @@
 struct of_action_id {
     uint16_t type;
     uint16_t len;
-    pad(4);
 };
 
 struct of_action_output : of_action {
diff --git a/test_data/of13/action_id_output.data b/test_data/of13/action_id_output.data
new file mode 100644
index 0000000..7712203
--- /dev/null
+++ b/test_data/of13/action_id_output.data
@@ -0,0 +1,8 @@
+-- binary
+00 00 # type
+00 04 # length
+-- python
+ofp.action_id.output()
+-- c
+obj = of_action_id_output_new(OF_VERSION_1_3);
+-- java