diff --git a/packages/backend/src/queue/processors/db/import-posts.ts b/packages/backend/src/queue/processors/db/import-posts.ts
index 6215af707..e9e781c43 100644
--- a/packages/backend/src/queue/processors/db/import-posts.ts
+++ b/packages/backend/src/queue/processors/db/import-posts.ts
@@ -71,7 +71,7 @@ export async function importPosts(
 						visibility: "public",
 						visibleUsers: [],
 						channel: null,
-						apMentions: null,
+						apMentions: new Array(0),
 						apHashtags: undefined,
 						apEmojis: undefined,
 					});
@@ -113,7 +113,7 @@ export async function importPosts(
 						visibility: "public",
 						visibleUsers: [],
 						channel: null,
-						apMentions: null,
+						apMentions: new Array(0),
 						apHashtags: undefined,
 						apEmojis: undefined,
 					});