diff --git a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/executor/D331RtcmMessageExecutor.java b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/executor/D331RtcmMessageExecutor.java
index e4ab58d9..9268fee8 100644
--- a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/executor/D331RtcmMessageExecutor.java
+++ b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/executor/D331RtcmMessageExecutor.java
@@ -48,7 +48,7 @@ public class D331RtcmMessageExecutor implements Executor<D331RtcmMessage, Void>
             byte[] forwardBytes = message.getSrcData();
             // 要求快速转发，因此用缓存，不要每次都查数据库
             List<Device> deviceList = deviceService.findByParentId(id);
-            logger.debug("base station {} has {} rovers: "+message.getId(),deviceList.size());
+            logger.debug("base station {} has {} rovers: ", message.getId(),deviceList.size());
             for (Device device : deviceList) {
                 if (device.getOpMode() != GnssDevice.OP_MODE_USE) continue;
                 String deviceId = device.getDeviceId();