diff --git a/lib/ff_api.h b/lib/ff_api.h
index 967b8b83d..52ab85e27 100644
--- a/lib/ff_api.h
+++ b/lib/ff_api.h
@@ -56,7 +56,7 @@ struct linux_sockaddr {
 #define AF_INET6    28
 #define PF_INET6    AF_INET6
 #define AF_INET6_LINUX    10
-#define PF_INET6_LINUX    AF_INET6
+#define PF_INET6_LINUX    AF_INET6_LINUX
 
 typedef int (*loop_func_t)(void *arg);