diff --git a/include/types/server.h b/include/types/server.h
index 51b7e53..feede6d 100644
--- a/include/types/server.h
+++ b/include/types/server.h
@@ -117,6 +117,7 @@
 #define SRV_F_CHECKADDR    0x0020        /* this server has a check addr configured */
 #define SRV_F_CHECKPORT    0x0040        /* this server has a check port configured */
 #define SRV_F_AGENTADDR    0x0080        /* this server has a agent addr configured */
+#define SRV_F_COOKIESET    0x0100        /* this server has a cookie configured, so don't generate dynamic cookies */
 
 /* configured server options for send-proxy (server->pp_opts) */
 #define SRV_PP_V1          0x0001        /* proxy protocol version 1 */