diff --git a/c_gen/templates/of_type_maps.c b/c_gen/templates/of_type_maps.c
index 15b3816..69c4154 100644
--- a/c_gen/templates/of_type_maps.c
+++ b/c_gen/templates/of_type_maps.c
@@ -300,6 +300,7 @@
         buf_u32_get(buf + OF_INSTRUCTION_EXPERIMENTER_SUBTYPE_OFFSET, &subtype);
         switch (subtype) {
         case 0: *id = OF_INSTRUCTION_BSN_DISABLE_SRC_MAC_CHECK; break;
+        case 1: *id = OF_INSTRUCTION_BSN_ARP_OFFLOAD; break;
         }
         break;
     }