diff --git a/cogs/mentor_requests.py b/cogs/mentor_requests.py
index 48b5aea..6c5c01b 100644
--- a/cogs/mentor_requests.py
+++ b/cogs/mentor_requests.py
@@ -28,7 +28,7 @@
 )
 PROM_TASK_QUEUE = prometheus_client.Gauge("mentor_requests_task_queue", "size of the task queue")
 PROM_EXERCISM_INTERVAL = prometheus_client.Gauge(
-    "mentor_requests_exercism_interval", "delay between refreshes", ["track"]
+    "mentor_request_exercism_interval", "delay between refreshes", ["track"]
 )
 
 
@@ -203,7 +203,7 @@ async def fetch_discord_thread(self, track: str) -> None:
         thread = await self.get_thread(track)
         messages = {}
         await self.unarchive(thread)
-        async for message in thread.history():
+        async for message in thread.history(limit=None):
             if message.author != thread.owner:
                 continue
             if message == thread.starter_message:
@@ -278,7 +278,7 @@ async def load_data(self) -> None:
         assert isinstance(channel, discord.TextChannel), f"{channel} is not a TextChannel."
 
         self.threads = {}
-        async for message in channel.history():
+        async for message in channel.history(limit=None):
             if not message.thread:
                 continue
             thread = await message.fetch_thread()