diff --git a/src/modules/13_salary/components/salaryEmployeeChart/DialogFormCriteria.vue b/src/modules/13_salary/components/salaryEmployeeChart/DialogFormCriteria.vue
index 6d60ac6be..a9bf2338a 100644
--- a/src/modules/13_salary/components/salaryEmployeeChart/DialogFormCriteria.vue
+++ b/src/modules/13_salary/components/salaryEmployeeChart/DialogFormCriteria.vue
@@ -94,7 +94,7 @@ function clearFormData() {
   formData.posLevel = "";
   formData.reson = "";
   formData.rateOldMin = "";
-  formData.groupOld = "";
+  formData.groupOld = null;
   formData.rateMaxOld = "";
   formData.groupRateHigh = "";
   formData.rateHighMax = "";