diff --git a/jarvis/cogs/util.py b/jarvis/cogs/util.py
index 5f0674c..6c859c2 100644
--- a/jarvis/cogs/util.py
+++ b/jarvis/cogs/util.py
@@ -72,6 +72,9 @@ 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):
+            await ctx.send("Please use ASCII characters.")
+            return
         for letter in text.upper():
             if letter == " ":
                 to_send += "      "