diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/dao/provider/DeviceChannelProvider.java b/src/main/java/com/genersoft/iot/vmp/gb28181/dao/provider/DeviceChannelProvider.java
index 9578682be..6cfafb7c7 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/dao/provider/DeviceChannelProvider.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/dao/provider/DeviceChannelProvider.java
@@ -101,7 +101,7 @@ public class DeviceChannelProvider {
             }
             sqlBuild.append(" )");
         }
-        sqlBuild.append("ORDER BY device_id");
+        sqlBuild.append(" ORDER BY device_id");
         return sqlBuild.toString();
     }