diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index aca0db5..681850b 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -153,6 +153,14 @@
 #define USAGE_TICKETS ""
 #endif /* POLARSSL_SSL_SESSION_TICKETS */
 
+#if defined(POLARSSL_SSL_MAX_FRAGMENT_LENGTH)
+#define USAGE_MAX_FRAG_LEN                                      \
+    "    max_frag_len=%%d     default: 16384 (tls default)\n"   \
+    "                        options: 512, 1024, 2048, 4096\n"
+#else
+#define USAGE_MAX_FRAG_LEN ""
+#endif /* POLARSSL_SSL_MAX_FRAGMENT_LENGTH */
+
 #define USAGE \
     "\n usage: ssl_server2 param=<>...\n"                   \
     "\n acceptable parameters:\n"                           \
@@ -169,8 +177,7 @@
     "                        options: ssl3, tls1, tls1_1, tls1_2\n" \
     "    auth_mode=%%s        default: \"optional\"\n"      \
     "                        options: none, optional, required\n" \
-    "    max_frag_len=%%d     default: 16384 (tls default)\n"  \
-    "                        options: 512, 1024, 2048, 4096\n" \
+    USAGE_MAX_FRAG_LEN                                      \
     USAGE_PSK                                               \
     "\n"                                                    \
     "    force_ciphersuite=<name>    default: all enabled\n"\
@@ -618,7 +625,9 @@
     ssl_set_endpoint( &ssl, SSL_IS_SERVER );
     ssl_set_authmode( &ssl, opt.auth_mode );
 
+#if defined(POLARSSL_SSL_MAX_FRAGMENT_LENGTH)
     ssl_set_max_frag_len( &ssl, opt.mfl_code );
+#endif
 
     ssl_set_rng( &ssl, ctr_drbg_random, &ctr_drbg );
     ssl_set_dbg( &ssl, my_debug, stdout );