diff --git a/wireshark_gen/field_info.py b/wireshark_gen/field_info.py
index 28f4cdb..4a80a8e 100644
--- a/wireshark_gen/field_info.py
+++ b/wireshark_gen/field_info.py
@@ -111,6 +111,11 @@
     ('of_action_id', 'type'): 'ofp_action_type',
     ('of_instruction_apply_actions', 'type'): 'ofp_instruction_type',
     ('of_instruction_write_actions', 'type'): 'ofp_instruction_type',
+    ('of_group_mod', 'group_type'): 'ofp_group_type',
+    ('of_group_mod', 'type'): 'ofp_type',
+    ('of_group_mod', 'command'): 'ofp_group_mod_commane',
+    ('of_group_mod', 'group_id'): 'ofp_group',
+
 }
 
 # Override oftype_to_base for certain field names