diff --git a/src/main/java/cn/lihongjie/coal/purchaseOrder/service/PurchaseOrderService.java b/src/main/java/cn/lihongjie/coal/purchaseOrder/service/PurchaseOrderService.java
index 550dd0e5..43322c57 100644
--- a/src/main/java/cn/lihongjie/coal/purchaseOrder/service/PurchaseOrderService.java
+++ b/src/main/java/cn/lihongjie/coal/purchaseOrder/service/PurchaseOrderService.java
@@ -70,7 +70,7 @@ public class PurchaseOrderService
 
         for (Tuple tuple : resultList) {
 
-            if (tuple.get("wsize", Long.class) > 0){
+            if (tuple.get("wsize", Integer.class) > 0){
                 throw new BizException("采购单 " + tuple.get("code", String.class) + "已经关联过磅数据, 无法删除");
             }