diff --git a/jarvis/cogs/util.py b/jarvis/cogs/util.py
index 59f8bd0..a081b40 100644
--- a/jarvis/cogs/util.py
+++ b/jarvis/cogs/util.py
@@ -69,7 +69,9 @@ class UtilCog(commands.Cog):
     )
     async def _rcauto(self, ctx: SlashContext, text: str):
         to_send = ""
-        if len(text) == 1 and not re.match(r"^[A-Z0-9-()$@!?^'#. ]$", text):
+        if len(text) == 1 and not re.match(
+            r"^[A-Z0-9-()$@!?^'#. ]$", text.upper()
+        ):
             await ctx.send("Please use ASCII characters.", hidden=True)
             return
         for letter in text.upper():