diff --git a/xhpc-modules/xhpc-activity/src/main/resources/mapper/XhpcDeviceMessageMapper.xml b/xhpc-modules/xhpc-activity/src/main/resources/mapper/XhpcDeviceMessageMapper.xml
index f79c240d..45567b1c 100644
--- a/xhpc-modules/xhpc-activity/src/main/resources/mapper/XhpcDeviceMessageMapper.xml
+++ b/xhpc-modules/xhpc-activity/src/main/resources/mapper/XhpcDeviceMessageMapper.xml
@@ -5,7 +5,7 @@
 
 
     <delete id="deleteMessageByDate">
-        delete from xhpc_device_message where create_time create_time <![CDATA[ <=  ]]> #{date}
+        delete from xhpc_device_message where create_time <![CDATA[ <=  ]]> #{date}
     </delete>