diff --git a/src/main/java/com/palnet/biz/api/ctr/cntrl/service/CtrCntrlService.java b/src/main/java/com/palnet/biz/api/ctr/cntrl/service/CtrCntrlService.java
index 5caedfe..53f5b46 100644
--- a/src/main/java/com/palnet/biz/api/ctr/cntrl/service/CtrCntrlService.java
+++ b/src/main/java/com/palnet/biz/api/ctr/cntrl/service/CtrCntrlService.java
@@ -134,7 +134,7 @@ public class CtrCntrlService {
 		List<CtrCntrlHstryArea> areaList = query.detailArea(controlId);
 		String stAreaNm = "";
 
-		if (!result.getHpno().isEmpty()) {
+		if (!result.getHpno().isEmpty() || result.getHpno() != null) {
 			result.setHpno(EncryptUtils.decrypt(result.getHpno()));
 		}