diff --git a/loxi_ir/ir.py b/loxi_ir/ir.py
index e2c4a34..8553f62 100644
--- a/loxi_ir/ir.py
+++ b/loxi_ir/ir.py
@@ -360,7 +360,7 @@
         member = ir_class(offset = length_info.offset,
                         base_length = length_info.base_length,
                         is_fixed_length=length_info.is_fixed_length,
-                        **convert_member_properties(vars(fe_member)))
+                        **convert_member_properties(fe_member._asdict()))
         member.of_class = of_class
         return member
 
diff --git a/openflow_input/standard-1.1 b/openflow_input/standard-1.1
index 906519c..7dedae7 100644
--- a/openflow_input/standard-1.1
+++ b/openflow_input/standard-1.1
@@ -1241,7 +1241,7 @@
 
 struct of_group_desc_stats_entry {
     uint16_t length;
-    uint8_t group_type;
+    enum ofp_group_type group_type;
     pad(1);
     uint32_t group_id;
     list(of_bucket_t) buckets;
diff --git a/openflow_input/standard-1.2 b/openflow_input/standard-1.2
index 90447f5..8f21594 100644
--- a/openflow_input/standard-1.2
+++ b/openflow_input/standard-1.2
@@ -1208,7 +1208,7 @@
 
 struct of_group_desc_stats_entry {
     uint16_t length;
-    uint8_t group_type;
+    enum ofp_group_type group_type;
     pad(1);
     uint32_t group_id;
     list(of_bucket_t) buckets;
diff --git a/openflow_input/standard-1.3 b/openflow_input/standard-1.3
index 4d0ca7e..1518931 100644
--- a/openflow_input/standard-1.3
+++ b/openflow_input/standard-1.3
@@ -1427,7 +1427,7 @@
 
 struct of_group_desc_stats_entry {
     uint16_t length;
-    uint8_t group_type;
+    enum ofp_group_type group_type;
     pad(1);
     uint32_t group_id;
     list(of_bucket_t) buckets;