diff --git a/server/src/main/java/com/cloud/template/TemplateManagerImpl.java b/server/src/main/java/com/cloud/template/TemplateManagerImpl.java
index 749f272bf361..a651cff7b3eb 100755
--- a/server/src/main/java/com/cloud/template/TemplateManagerImpl.java
+++ b/server/src/main/java/com/cloud/template/TemplateManagerImpl.java
@@ -2063,6 +2063,7 @@ private VMTemplateVO updateTemplateOrIso(BaseUpdateTemplateOrIsoCmd cmd) {
             ex.addProxyObject(String.valueOf(id), "templateId");
             throw ex;
         }
+        long oldGuestOSId = template.getGuestOSId();
 
         verifyTemplateId(id);
 
@@ -2119,7 +2120,6 @@ private VMTemplateVO updateTemplateOrIso(BaseUpdateTemplateOrIsoCmd cmd) {
         }
 
         if (guestOSId != null) {
-            long oldGuestOSId = template.getGuestOSId();
             GuestOSVO guestOS = _guestOSDao.findById(guestOSId);
 
             if (guestOS == null) {