diff --git a/ui/src/components/dynamics-form/constructor/items/KnowledgeConstructor.vue b/ui/src/components/dynamics-form/constructor/items/KnowledgeConstructor.vue
index 8e1186dc834..62e7cbdfcb5 100644
--- a/ui/src/components/dynamics-form/constructor/items/KnowledgeConstructor.vue
+++ b/ui/src/components/dynamics-form/constructor/items/KnowledgeConstructor.vue
@@ -150,9 +150,9 @@ function addKnowledge(data: any[]) {
   formValue.value.knowledge_list = data
   if (formValue.value.default_value) {
     const currentIds = data.map((k: any) => k.id)
-    formValue.value.default_value = formValue.value.default_value.filter((id: string) =>
-      currentIds.includes(id),
-    )
+    formValue.value.default_value = Array.isArray(formValue.value?.default_value)
+      ? formValue.value?.default_value.filter((id: string) => currentIds.includes(id))
+      : []
   }
 }
 
diff --git a/ui/src/components/dynamics-form/items/knowledge/Knowledge.vue b/ui/src/components/dynamics-form/items/knowledge/Knowledge.vue
index 4903ddd48d4..bf6287ce62b 100644
--- a/ui/src/components/dynamics-form/items/knowledge/Knowledge.vue
+++ b/ui/src/components/dynamics-form/items/knowledge/Knowledge.vue
@@ -48,9 +48,18 @@ defineOptions({ inheritAttrs: false })
 const emit = defineEmits(['update:modelValue', 'change'])
 
 const model_value = computed({
-  get: () =>
-    props.modelValue.filter((id: string) => availableList.value.some((item) => item.id === id)) ||
-    [],
+  get: () => {
+    if (Array.isArray(props.modelValue)) {
+      return (
+        props.modelValue.filter((id: string) =>
+          availableList.value.some((item) => item.id === id),
+        ) || []
+      )
+    } else {
+      emit('update:modelValue', [])
+    }
+    return []
+  },
   set: (value: string[]) => {
     emit('update:modelValue', value)
     emit('change', props.formField)