diff --git a/components/bt/host/bluedroid/Kconfig.in b/components/bt/host/bluedroid/Kconfig.in
index 9c0261268cb..f60855fc334 100644
--- a/components/bt/host/bluedroid/Kconfig.in
+++ b/components/bt/host/bluedroid/Kconfig.in
@@ -270,7 +270,7 @@ config BT_GATTC_MAX_CACHE_CHAR
 config BT_GATTC_NOTIF_REG_MAX
     int "Max gattc notify(indication) register number"
     depends on BT_GATTC_ENABLE
-    range 1 64
+    range 1 255
     default 5
     help
         Maximum GATTC notify(indication) register number