diff --git a/include/types/connection.h b/include/types/connection.h
index beb0b71..eb67455 100644
--- a/include/types/connection.h
+++ b/include/types/connection.h
@@ -226,6 +226,7 @@
 	CO_ER_SSL_HANDSHAKE_HB, /* SSL error during handshake with heartbeat present */
 	CO_ER_SSL_KILLED_HB,    /* Stopped a TLSv1 heartbeat attack (CVE-2014-0160) */
 	CO_ER_SSL_NO_TARGET,    /* unknown target (not client nor server) */
+	CO_ER_SSL_EARLY_FAILED, /* Server refused early data */
 };
 
 /* source address settings for outgoing connections */
diff --git a/include/types/server.h b/include/types/server.h
index 4a31934..76225f7 100644
--- a/include/types/server.h
+++ b/include/types/server.h
@@ -167,6 +167,7 @@
 #define SRV_SSL_O_NONE         0x0000
 #define SRV_SSL_O_NO_TLS_TICKETS 0x0100 /* disable session resumption tickets */
 #define SRV_SSL_O_NO_REUSE     0x200  /* disable session reuse */
+#define SRV_SSL_O_EARLY_DATA   0x400  /* Allow using early data */
 #endif
 
 struct pid_list {