diff --git a/c_gen/c_test_gen.py b/c_gen/c_test_gen.py
index 109ab9b..6e88d6d 100644
--- a/c_gen/c_test_gen.py
+++ b/c_gen/c_test_gen.py
@@ -105,6 +105,7 @@
         # BSN extensions
         of_bsn_vport_q_in_q_t="vport",
         of_bitmap_128_t="bitmap_128",
+        of_bitmap_512_t="bitmap_512",
         of_checksum_128_t="checksum_128",
         )
 
@@ -120,7 +121,7 @@
 string_types = [ "of_port_name_t", "of_table_name_t",
                 "of_desc_str_t", "of_serial_num_t", "of_mac_addr_t",
                 "of_ipv6_t", "of_bitmap_128_t", "of_checksum_128_t",
-                "of_str64_t"]
+                "of_str64_t", "of_bitmap_512_t"]
 
 scalar_types = integer_types[:]
 scalar_types.extend(string_types)