diff --git a/c_gen/c_test_gen.py b/c_gen/c_test_gen.py
index fab9f96..d237cfe 100644
--- a/c_gen/c_test_gen.py
+++ b/c_gen/c_test_gen.py
@@ -98,6 +98,7 @@
         of_match_t="match",
         # BSN extensions
         of_bsn_vport_q_in_q_t="vport",
+        of_bitmap_128_t="bitmap_128",
         )
 
     if m_type.find("of_list_") == 0:
@@ -111,7 +112,7 @@
                  "of_match_bmap_t", "of_ipv4_t"]
 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_ipv6_t", "of_bitmap_128_t"]
 
 scalar_types = integer_types[:]
 scalar_types.extend(string_types)