diff --git a/components/bt/host/bluedroid/hci/hci_layer.c b/components/bt/host/bluedroid/hci/hci_layer.c
index 839da44b2c..ad8efcf17f 100644
--- a/components/bt/host/bluedroid/hci/hci_layer.c
+++ b/components/bt/host/bluedroid/hci/hci_layer.c
@@ -35,7 +35,7 @@
 #include "osi/fixed_queue.h"
 
 #define HCI_HOST_TASK_PINNED_TO_CORE    (TASK_PINNED_TO_CORE)
-#define HCI_HOST_TASK_STACK_SIZE        (4096 + BT_TASK_EXTRA_STACK_SIZE)
+#define HCI_HOST_TASK_STACK_SIZE        (2048 + BT_TASK_EXTRA_STACK_SIZE)
 #define HCI_HOST_TASK_PRIO              (BT_TASK_MAX_PRIORITIES - 3)
 #define HCI_HOST_TASK_NAME              "hciT"