diff --git a/microservices-modules/microservices-modules-pms/src/main/java/com/microservices/pms/product/domain/vo/ProductReqSpecsChangeVo.java b/microservices-modules/microservices-modules-pms/src/main/java/com/microservices/pms/product/domain/vo/ProductReqSpecsChangeVo.java
index d047eb9d0..244dfde20 100644
--- a/microservices-modules/microservices-modules-pms/src/main/java/com/microservices/pms/product/domain/vo/ProductReqSpecsChangeVo.java
+++ b/microservices-modules/microservices-modules-pms/src/main/java/com/microservices/pms/product/domain/vo/ProductReqSpecsChangeVo.java
@@ -56,7 +56,7 @@ public class ProductReqSpecsChangeVo {
         if (StringUtils.isNotEmpty(this.getTitle()) && !this.title.equals(oldPmsProductRequirement.getTitle())) {
             return true;
         }
-        return !Objects.equals(this.getFileIdentifiers(), oldPmsProductRequirement.getFileIdentifiers());
+        return this.getFileIdentifiers() != null && !Objects.equals(this.getFileIdentifiers(), oldPmsProductRequirement.getFileIdentifiers());
     }
 
     public PmsProductRequirement toPmsProductRequirement() {