diff --git a/ClemBot.Bot/bot/__main__.py b/ClemBot.Bot/bot/__main__.py
index 43d94d73..b8d9a41c 100644
--- a/ClemBot.Bot/bot/__main__.py
+++ b/ClemBot.Bot/bot/__main__.py
@@ -7,6 +7,7 @@
 
 import bot.bot_secrets as bot_secrets
 from bot.clem_bot import ClemBot
+from bot.consts import INVALID_PREFIXES
 from bot.custom_prefix import CustomPrefix
 from bot.messaging.messenger import Messenger
 from bot.utils.scheduler import Scheduler
@@ -36,6 +37,9 @@ async def main() -> None:
 
     # get the default prefix for the bot instance
     prefix = bot_secrets.secrets.bot_prefix
+    if prefix in INVALID_PREFIXES:
+        bot_log.fatal(f"Invalid bot prefix")
+        sys.exit(0)
 
     # Initialize the messenger here and inject it into the base bot class,
     # this is so it can be reused later on
diff --git a/ClemBot.Bot/bot/cogs/custom_prefix_cog.py b/ClemBot.Bot/bot/cogs/custom_prefix_cog.py
index 5cc04d58..36e39d38 100644
--- a/ClemBot.Bot/bot/cogs/custom_prefix_cog.py
+++ b/ClemBot.Bot/bot/cogs/custom_prefix_cog.py
@@ -4,7 +4,7 @@
 import bot.bot_secrets as bot_secrets
 import bot.extensions as ext
 from bot.clem_bot import ClemBot
-from bot.consts import Claims, Colors
+from bot.consts import INVALID_PREFIXES, Claims, Colors
 from bot.utils.logging_utils import get_logger
 
 log = get_logger(__name__)
@@ -45,6 +45,15 @@ async def prefix(self, ctx: ext.ClemBotCtx, *, prefix: str | None = None) -> Non
             await ctx.send(embed=embed)
             return
 
+        if prefix in INVALID_PREFIXES:
+            embed = discord.Embed(title="Error", color=Colors.Error)
+            embed.add_field(
+                name="Invalid prefix",
+                value=f"The given prefix `{prefix}` is not supported.",
+            )
+            await ctx.send(embed=embed)
+            return
+
         if "`" in prefix:
             embed = discord.Embed(title="Error", color=Colors.Error)
             embed.add_field(name="Invalid prefix", value='Prefix can not contain " ` "')
diff --git a/ClemBot.Bot/bot/consts.py b/ClemBot.Bot/bot/consts.py
index c0c8dd97..762175c8 100644
--- a/ClemBot.Bot/bot/consts.py
+++ b/ClemBot.Bot/bot/consts.py
@@ -97,3 +97,4 @@ class Moderation:
 
 
 TAG_INVOKE_REGEX = r"{tag_prefix}([^\s]+)"
+INVALID_PREFIXES = ["<"]