diff --git a/mautrix_telegram/config.py b/mautrix_telegram/config.py
index 74b95188..7153e55f 100644
--- a/mautrix_telegram/config.py
+++ b/mautrix_telegram/config.py
@@ -187,10 +187,12 @@ class Config(BaseBridgeConfig):
             base["bridge.backfill.forward_limits.sync.channel"] = sync_limit
         else:
             copy("bridge.backfill.forward_limits.initial.user")
-            copy("bridge.backfill.forward_limits.initial.chat")
+            copy("bridge.backfill.forward_limits.initial.normal_group")
+            copy("bridge.backfill.forward_limits.initial.supergroup")
             copy("bridge.backfill.forward_limits.initial.channel")
             copy("bridge.backfill.forward_limits.sync.user")
-            copy("bridge.backfill.forward_limits.sync.chat")
+            copy("bridge.backfill.forward_limits.sync.normal_group")
+            copy("bridge.backfill.forward_limits.sync.supergroup")
             copy("bridge.backfill.forward_limits.sync.channel")
         copy("bridge.backfill.incremental.messages_per_batch")
         copy("bridge.backfill.incremental.post_batch_delay")