diff --git a/src/plugins/nonebot_plugin_githubcard/__init__.py b/src/plugins/nonebot_plugin_githubcard/__init__.py
index 9a82bd6..70135fb 100644
--- a/src/plugins/nonebot_plugin_githubcard/__init__.py
+++ b/src/plugins/nonebot_plugin_githubcard/__init__.py
@@ -29,5 +29,6 @@ def match_link_parts(link):
 async def github_handle(bot: Bot, event: GroupMessageEvent, state: T_State):
     url = match_link_parts(event.get_plaintext())
     imageUrl = await get_github_reposity_information(url)
-    assert (imageUrl != "获取信息失败")
+    if (imageUrl == "获取信息失败"):
+        raise AssertionError
     await github.send(MessageSegment.image(imageUrl))