diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index 538d0d0..2b81fc1 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -473,13 +473,19 @@
     "                        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"
+#else
+#define USAGE_SERIALIZATION ""
+#endif
+
+#if defined(MBEDTLS_SSL_KEYING_MATERIAL_EXPORT)
+#define USAGE_EXPORT \
     "    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 ""
+#define USAGE_EXPORT ""
 #endif
 
 #define USAGE_KEY_OPAQUE_ALGS \
@@ -589,6 +595,7 @@
     "                                otherwise. The expansion of the macro\n" \
     "                                is printed if it is defined\n"           \
     USAGE_SERIALIZATION                                                       \
+    USAGE_EXPORT                                                              \
     "\n"
 
 #define PUT_UINT64_BE(out_be, in_le, i)                                   \
@@ -3656,7 +3663,7 @@
         mbedtls_printf("\n");
     }
 
-#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
+#if defined(MBEDTLS_SSL_KEYING_MATERIAL_EXPORT)
     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) {
@@ -3679,7 +3686,7 @@
         mbedtls_printf("\n\n");
         fflush(stdout);
     }
-#endif /* defined(MBEDTLS_SSL_CONTEXT_SERIALZIATION) */
+#endif /* defined(MBEDTLS_SSL_KEYING_MATERIAL_EXPORT) */
 
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
     else if (opt.use_srtp != 0) {