diff --git a/app/Controllers/Common/CommonController.php b/app/Controllers/Common/CommonController.php
index f0e3e84..0cd8847 100644
--- a/app/Controllers/Common/CommonController.php
+++ b/app/Controllers/Common/CommonController.php
@@ -197,10 +197,14 @@ class CommonController extends BaseController
     }
     protected function update_process($entity)
     {
-        if (!$this->_model->save($entity)) {
-            Log::add("error", __FUNCTION__ . "에서 호출:" . $this->_model->getLastQuery());
-            Log::add("error", implode("\n", $this->_model->errors()));
-            throw new \Exception(__FUNCTION__ . " 오류 발생.\n" . var_export($this->_model->errors(), true));
+        if ($entity->hasChanged()) {
+            if (!$this->_model->save($entity)) {
+                Log::add("error", __FUNCTION__ . "에서 호출:" . $this->_model->getLastQuery());
+                Log::add("error", implode("\n", $this->_model->errors()));
+                throw new \Exception(__FUNCTION__ . " 오류 발생.\n" . var_export($this->_model->errors(), true));
+            }
+        } else {
+            throw new \Exception("새로 변경된 값이 없습니다." . var_export($this->_viewDatas['fieldDatas'], true));
         }
         return $entity;
     }