diff --git a/c_gen/c_code_gen.py b/c_gen/c_code_gen.py
index a9a0576..9add81b 100644
--- a/c_gen/c_code_gen.py
+++ b/c_gen/c_code_gen.py
@@ -621,7 +621,7 @@
 } of_bitmap_512_t;
 
 extern const of_mac_addr_t of_mac_addr_all_ones;
-extern const of_mac_addr_t of_mac_addr_all_zeroes;
+extern const of_mac_addr_t of_mac_addr_all_zeros;
 
 extern const of_ipv6_t of_ipv6_all_ones;
 extern const of_ipv6_t of_ipv6_all_zeros;