diff --git a/modules/WillieTimer/cog.py b/modules/WillieTimer/cog.py
index efc19b3..a20f5b7 100644
--- a/modules/WillieTimer/cog.py
+++ b/modules/WillieTimer/cog.py
@@ -44,6 +44,8 @@ class WillieTimer(commands.Cog):
             print(f"It's {datetime.datetime.now().strftime('%H:%M:%S')}!")
             await self.channel.send(output_string['warm up'])
 
+        del output_string
+
     @commands.command(help="Use this command to start the background task to wait for 4:20",
                       brief="Starts the 4:20 clock")
     async def start420(self, ctx, *, member: discord.Member = None):