diff --git a/mautrix_facebook/user.py b/mautrix_facebook/user.py
index 214f6cbeca0d16717fb51c937d3f95f6e25b4204..e8a54ecace3decb210dd652ec40b8e19e67ddcc4 100644
--- a/mautrix_facebook/user.py
+++ b/mautrix_facebook/user.py
@@ -37,7 +37,8 @@ if TYPE_CHECKING:
 try:
     from aiohttp_socks import ProxyError
 except ImportError:
-    ProxyError = None
+    class ProxyError(Exception):
+        pass
 
 config: Config