diff --git a/datamodels/2.x/itop-portal-base/portal/src/forms/objectformmanager.class.inc.php b/datamodels/2.x/itop-portal-base/portal/src/forms/objectformmanager.class.inc.php
index cedbb8422a..f4f2226fb2 100644
--- a/datamodels/2.x/itop-portal-base/portal/src/forms/objectformmanager.class.inc.php
+++ b/datamodels/2.x/itop-portal-base/portal/src/forms/objectformmanager.class.inc.php
@@ -395,10 +395,14 @@ class ObjectFormManager extends FormManager
                 {
                     $aFieldsExtraData[$sFieldId]['display_mode'] = $oFieldNode->getAttribute('data-field-display-mode');
                 }
-                else
+                elseif(isset($this->aFormProperties['properties']['display_mode']))
                 {
                     $aFieldsExtraData[$sFieldId]['display_mode'] = $this->aFormProperties['properties']['display_mode'];
                 }
+                else
+                {
+                    $aFieldsExtraData[$sFieldId]['display_mode'] = ApplicationHelper::FORM_DEFAULT_DISPLAY_MODE;
+                }
 
 				// Settings field flags from the data-field-flags attribute
 				foreach (explode(' ', $sFieldFlags) as $sFieldFlag)