diff --git a/app/adminapi/validate/supervision_work/SupervisionCheckItemValidate.php b/app/adminapi/validate/supervision_work/SupervisionCheckItemValidate.php
index 1793a103b..7d97ab401 100644
--- a/app/adminapi/validate/supervision_work/SupervisionCheckItemValidate.php
+++ b/app/adminapi/validate/supervision_work/SupervisionCheckItemValidate.php
@@ -159,7 +159,7 @@ class SupervisionCheckItemValidate extends BaseValidate
 			if(empty($v['check_content'])){
 				return '第'.($k+1).'行检查内容为空';
 			}
-			if(!isset($v['must_check']) || $v['must_check'] = ''){
+			if(!isset($v['must_check']) || $v['must_check'] == ''){
 				return '第'.($k+1).'行是否必检为空';
 			}
 			if(!in_array($v['must_check'],[0,1])){