diff --git a/mongoose.c b/mongoose.c
index 9fb3414a..c9ea580b 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -4540,6 +4540,7 @@ void mg_tls_init(struct mg_connection *c, struct mg_tls_opts *opts) {
 #endif
     }
   }
+#if OPENSSL_VERSION_NUMBER > 0x10002000L
   if (opts->srvname.len > 0) {
     char mem[128], *buf = mem;
     size_t len = mg_asprintf(&buf, sizeof(mem), "%.*s", (int) opts->srvname.len,
@@ -4547,6 +4548,7 @@ void mg_tls_init(struct mg_connection *c, struct mg_tls_opts *opts) {
     X509_VERIFY_PARAM_set1_host(SSL_get0_param(tls->ssl), buf, len);
     if (buf != mem) free(buf);
   }
+#endif
   if (opts->ciphers != NULL) SSL_set_cipher_list(tls->ssl, opts->ciphers);
   if (opts->srvname.len > 0) {
     char mem[128], *buf = mem;
diff --git a/src/tls_openssl.c b/src/tls_openssl.c
index b24e1750..3db1351d 100644
--- a/src/tls_openssl.c
+++ b/src/tls_openssl.c
@@ -88,6 +88,7 @@ void mg_tls_init(struct mg_connection *c, struct mg_tls_opts *opts) {
 #endif
     }
   }
+#if OPENSSL_VERSION_NUMBER > 0x10002000L
   if (opts->srvname.len > 0) {
     char mem[128], *buf = mem;
     size_t len = mg_asprintf(&buf, sizeof(mem), "%.*s", (int) opts->srvname.len,
@@ -95,6 +96,7 @@ void mg_tls_init(struct mg_connection *c, struct mg_tls_opts *opts) {
     X509_VERIFY_PARAM_set1_host(SSL_get0_param(tls->ssl), buf, len);
     if (buf != mem) free(buf);
   }
+#endif
   if (opts->ciphers != NULL) SSL_set_cipher_list(tls->ssl, opts->ciphers);
   if (opts->srvname.len > 0) {
     char mem[128], *buf = mem;