diff --git a/components/bt/common/osi/config.c b/components/bt/common/osi/config.c
index 38c981bc7b8..89f50651d8a 100644
--- a/components/bt/common/osi/config.c
+++ b/components/bt/common/osi/config.c
@@ -20,6 +20,7 @@
 #include "osi/allocator.h"
 #include "osi/config.h"
 #include "osi/list.h"
+#include "osi/osi.h"
 
 #define CONFIG_FILE_MAX_SIZE             (1536)//1.5k
 #define CONFIG_FILE_DEFAULE_LENGTH       (2048)
@@ -612,7 +613,7 @@ static bool config_parse(nvs_handle_t fp, config_t *config)
     assert(config != NULL);
 
     esp_err_t err;
-    int line_num = 0;
+    UNUSED_ATTR int line_num = 0;
     int err_code = 0;
     uint16_t i = 0;
     size_t length = CONFIG_FILE_DEFAULE_LENGTH;
diff --git a/components/bt/host/bluedroid/stack/l2cap/l2c_api.c b/components/bt/host/bluedroid/stack/l2cap/l2c_api.c
index 35953afcd11..183b708b965 100644
--- a/components/bt/host/bluedroid/stack/l2cap/l2c_api.c
+++ b/components/bt/host/bluedroid/stack/l2cap/l2c_api.c
@@ -2358,6 +2358,8 @@ UINT16 L2CA_FlushChannel (UINT16 lcid, UINT16 num_to_flush)
                     num_flushed1 = 0,
                     num_flushed2 = 0;
 
+    UNUSED(num_flushed1);
+
     p_ccb = l2cu_find_ccb_by_cid(NULL, lcid);
 
     if ( !p_ccb || ((p_lcb = p_ccb->p_lcb) == NULL) ) {