diff --git a/README.md b/README.md
index 4231cc9..7c98fd6 100644
--- a/README.md
+++ b/README.md
@@ -162,13 +162,13 @@ There are two json files in the directory "ws_livox/src/livox_ros_driver/launch"
    			"extrinsic_parameter_source": 1
         	},
    		{
-               "broadcast_code": "1HDDG8M00100191",
+                        "broadcast_code": "1HDDG8M00100191",
    			"enable_connect": true,
-       		"enable_fan": true,
-       		"return_mode": 0,
-       		"coordinate": 0,
-       		"imu_rate": 1,
-               "extrinsic_parameter_source": 1
+       		        "enable_fan": true,
+       		        "return_mode": 0,
+       		        "coordinate": 0,
+       		        "imu_rate": 1,
+                        "extrinsic_parameter_source": 1
    		}
    	]
    }