diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 7ee9883..4618d46 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -704,17 +704,20 @@
 
     } buffering;
 
-#if defined(MBEDTLS_SSL_PROTO_DTLS) || defined(MBEDTLS_SSL_PROTO_TLS1_3)
-    unsigned char *verify_cookie;       /*!<  Cli: HelloVerifyRequest cookie
-                                         *    for dtls / tls 1.3
-                                         *    Srv: unused                    */
-    unsigned char verify_cookie_len;    /*!<  Cli: cookie length for
-                                         *    dtls / tls 1.3
+#if defined(MBEDTLS_SSL_CLI_C) && \
+    ( defined(MBEDTLS_SSL_PROTO_DTLS) || defined(MBEDTLS_SSL_PROTO_TLS1_3) )
+    unsigned char *cookie;              /*!<  HelloVerifyRequest cookie for DTLS
+                                         *    HelloRetryRequest cookie for TLS 1.3 */
+#endif /* MBEDTLS_SSL_CLI_C &&
+          ( MBEDTLS_SSL_PROTO_DTLS || MBEDTLS_SSL_PROTO_TLS1_3 ) */
+#if defined(MBEDTLS_SSL_PROTO_DTLS)
+    unsigned char verify_cookie_len;    /*!<  Cli: HelloVerifyRequest cookie
+                                         *    length
                                          *    Srv: flag for sending a cookie */
-    uint16_t hrr_cookie_len;       /*!<  Cli: hrr cookie length for
-                                         *    dtls / tls 1.3
-                                         *    Srv: unused                    */
-#endif /* MBEDTLS_SSL_PROTO_DTLS || MBEDTLS_SSL_PROTO_TLS1_3 */
+#endif /* MBEDTLS_SSL_PROTO_DTLS */
+#if defined(MBEDTLS_SSL_CLI_C) && defined(MBEDTLS_SSL_PROTO_TLS1_3)
+    uint16_t hrr_cookie_len;            /*!<  HelloRetryRequest cookie length */
+#endif /* MBEDTLS_SSL_CLI_C || MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
     unsigned int out_msg_seq;           /*!<  Outgoing handshake sequence number */