diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/controller/PlayController.java b/src/main/java/com/genersoft/iot/vmp/gb28181/controller/PlayController.java
index d4b75bf3b..451f9b015 100755
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/controller/PlayController.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/controller/PlayController.java
@@ -89,7 +89,7 @@ public class PlayController {
 		Assert.notNull(channelId, "通道国标编号不可为NULL");
 		// 获取可用的zlm
 		Device device = deviceService.getDeviceByDeviceId(deviceId);
-		Assert.notNull(deviceId, "设备不存在");
+		Assert.notNull(device, "设备不存在");
 		DeviceChannel channel = deviceChannelService.getOne(deviceId, channelId);
 		Assert.notNull(channel, "通道不存在");