diff --git a/npu_status.sh b/npu_status.sh
index 574447b0..e9250e95 100644
--- a/npu_status.sh
+++ b/npu_status.sh
@@ -32,7 +32,7 @@ while true; do
     device_mem_usage=""
     for ((i=0; i<device_cnt; i++)); do
         mem_usage=$(get_mem_usage ${chip_id_arr_from_info[i]} ${i})
-        device_mem_usage="${device_mem_usage}{\"npu_id\": ${npu_id_arr_from_info[i]}, \"chip_id\": ${chip_id_arr_from_info[i]}, "device_id": ${i}, "mem_usage": ${mem_usage}}, "
+        device_mem_usage="${device_mem_usage}{\"npu_id\": ${npu_id_arr_from_info[i]}, \"chip_id\": ${chip_id_arr_from_info[i]}, \"device_id\": ${i}, \"mem_usage\": ${mem_usage}}, "
     done
     device_mem_usage="${device_mem_usage%??}"