diff --git a/lib/zin/wg/gantt/js/v1.js b/lib/zin/wg/gantt/js/v1.js
index 40cafe10fc..b1d7410b0c 100644
--- a/lib/zin/wg/gantt/js/v1.js
+++ b/lib/zin/wg/gantt/js/v1.js
@@ -707,6 +707,14 @@ function initGantt()
                 return false;
             }
 
+            const sourceTask = gantt.getTask(link.source);
+            const targetTask = gantt.getTask(link.target);
+            if(sourceTask.allowLinks === false || targetTask.allowLinks === false)
+            {
+                zui.Messager.show({content: ganttLang.wrongKanbanTasks, type: 'danger-outline', icon: 'exclamation-sign'});
+                return false;
+            };
+
             return true;
         });