diff --git a/application/cmdbabstract.class.inc.php b/application/cmdbabstract.class.inc.php
index bdff79a5f..798066e86 100644
--- a/application/cmdbabstract.class.inc.php
+++ b/application/cmdbabstract.class.inc.php
@@ -5137,8 +5137,8 @@ EOF
 		$sJSTitle = json_encode(Dict::S('UI:DisconnectedDlgTitle'));
 		$sJSOk = json_encode(Dict::S('UI:Button:Ok'));
 		$oPage->add_ready_script(
-			<<<EOF
-		window.setInterval(function() {
+			<<<JS
+		let hOwnershipLockHandlerInterval = window.setInterval(function() {
 			if (window.bInSubmit || window.bInCancel) return;
 			
 			$.post(GetAbsoluteUrlAppRoot()+'pages/ajax.render.php', {operation: 'extend_lock', obj_class: $sJSClass, obj_key: $iKey, token: $sJSToken }, function(data) {
@@ -5147,22 +5147,24 @@ EOF
 					if ($('.lock_owned').length == 0)
 					{
 						$('.ui-layout-content').prepend('<div class="header_message message_error lock_owned">'+data.message+'</div>');
-						$('<div>'+data.popup_message+'</div>').dialog({title: $sJSTitle, modal: true, autoOpen: true, buttons:[ {text: $sJSOk, click: function() { $(this).dialog('close'); } }], close: function() { $(this).remove(); }});
+						$('<div>'+data.popup_message+'</div>').dialog({title: $sJSTitle, modal: true, autoOpen: true, minWidth: 600, buttons:[ {text: $sJSOk, click: function() { $(this).dialog('close'); } }], close: function() { $(this).remove(); }});
 					}
-					$('.wizContainer form button.action:not(.cancel)').prop('disabled', true);
+					$('.object-details form .ibo-toolbar .ibo-button:not([name="cancel"])').prop('disabled', true);
+					clearInterval(hOwnershipLockHandlerInterval);
 				}
 				else if ((data.operation == 'lost') || (data.operation == 'expired'))
 				{
 					if ($('.lock_owned').length == 0)
 					{
 						$('.ui-layout-content').prepend('<div class="header_message message_error lock_owned">'+data.message+'</div>');
-						$('<div>'+data.popup_message+'</div>').dialog({title: $sJSTitle, modal: true, autoOpen: true, buttons:[ {text: $sJSOk, click: function() { $(this).dialog('close'); } }], close: function() { $(this).remove(); }});
+						$('<div>'+data.popup_message+'</div>').dialog({title: $sJSTitle, modal: true, autoOpen: true, minWidth: 600, buttons:[ {text: $sJSOk, click: function() { $(this).dialog('close'); } }], close: function() { $(this).remove(); }});
 					}
-					$('.wizContainer form button.action:not(.cancel)').prop('disabled', true);
+					$('.object-details form .ibo-toolbar .ibo-button:not([name="cancel"])').prop('disabled', true);
+					clearInterval(hOwnershipLockHandlerInterval);
 				}
 			}, 'json');
 		}, $iInterval);
-EOF
+JS
 		);
 	}
 
diff --git a/pages/ajax.render.php b/pages/ajax.render.php
index b66d7196f..90e8b01ce 100644
--- a/pages/ajax.render.php
+++ b/pages/ajax.render.php
@@ -2394,6 +2394,7 @@ EOF
 					}
 				}
 			}
+			$oPage->SetContentType('application/json');
 			$oPage->add(json_encode($aResult));
 			break;