diff --git a/src/stores/dialogStore.ts b/src/stores/dialogStore.ts
index 86ba93e32..089f89859 100644
--- a/src/stores/dialogStore.ts
+++ b/src/stores/dialogStore.ts
@@ -41,7 +41,9 @@ export const useDialogStore = defineStore('dialog', {
       this.isVisible = true
       nextTick(() => {
         this.title = options.title
-        this.headerComponent = markRaw(options.headerComponent)
+        this.headerComponent = options.headerComponent
+          ? markRaw(options.headerComponent)
+          : null
         this.component = markRaw(options.component)
         this.props = options.props || {}
         this.dialogComponentProps = options.dialogComponentProps || {}