diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index 3bcee9a..538d0d0 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -473,7 +473,11 @@
     "                        in the form of base64 code (serialize option\n"   \
     "                        must be set)\n"                                   \
     "                         default: \"\" (do nothing)\n"                    \
-    "                         option: a file path\n"
+    "                         option: a file path\n" \
+    "    exp_label=%%s       Label to input into TLS-Exporter\n" \
+    "                         default: None (don't try to export a key)\n" \
+    "    exp_len=%%d         Length of key to extract from TLS-Exporter \n" \
+    "                         default: 20\n"
 #else
 #define USAGE_SERIALIZATION ""
 #endif
@@ -521,10 +525,6 @@
     "    event=%%d            default: 0 (loop)\n"                            \
     "                        options: 1 (level-triggered, implies nbio=1),\n" \
     "    read_timeout=%%d     default: 0 ms (no timeout)\n"    \
-    "    exp_label=%%s       Label to input into TLS-Exporter\n" \
-    "                         default: None (don't try to export a key)\n" \
-    "    exp_len=%%d         Length of key to extract from TLS-Exporter \n" \
-    "                         default: 20\n" \
     "\n"                                                    \
     USAGE_DTLS                                              \
     USAGE_SRTP                                              \
@@ -3656,6 +3656,7 @@
         mbedtls_printf("\n");
     }
 
+#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
     if (opt.exp_label != NULL && opt.exp_len > 0) {
         unsigned char *exported_key = calloc((size_t) opt.exp_len, sizeof(unsigned int));
         if (exported_key == NULL) {
@@ -3678,6 +3679,7 @@
         mbedtls_printf("\n\n");
         fflush(stdout);
     }
+#endif /* defined(MBEDTLS_SSL_CONTEXT_SERIALZIATION) */
 
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
     else if (opt.use_srtp != 0) {