diff --git a/src/config.cpp b/src/config.cpp
index 78dce18ff..5ad981c83 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -2761,7 +2761,7 @@ standardConfig configs[] = {
     createBoolConfig("allow-write-during-load", NULL, MODIFIABLE_CONFIG, g_pserver->fWriteDuringActiveLoad, 0, NULL, NULL),
 
 #ifdef USE_OPENSSL
-    createIntConfig("tls-port", NULL, IMMUTABLE_CONFIG, 0, 65535, g_pserver->tls_port, 0, INTEGER_CONFIG, NULL, updateTLSPort), /* TCP port. */
+    createIntConfig("tls-port", NULL, MODIFIABLE_CONFIG, 0, 65535, g_pserver->tls_port, 0, INTEGER_CONFIG, NULL, updateTLSPort), /* TCP port. */
     createIntConfig("tls-session-cache-size", NULL, MODIFIABLE_CONFIG, 0, INT_MAX, g_pserver->tls_ctx_config.session_cache_size, 20*1024, INTEGER_CONFIG, NULL, updateTlsCfgInt),
     createIntConfig("tls-session-cache-timeout", NULL, MODIFIABLE_CONFIG, 0, INT_MAX, g_pserver->tls_ctx_config.session_cache_timeout, 300, INTEGER_CONFIG, NULL, updateTlsCfgInt),
     createBoolConfig("tls-cluster", NULL, MODIFIABLE_CONFIG, g_pserver->tls_cluster, 0, NULL, updateTlsCfgBool),