diff --git a/scroll.py b/scroll.py
index ad2f538..e9a8c5e 100644
--- a/scroll.py
+++ b/scroll.py
@@ -161,7 +161,7 @@ class Bot():
 			if ascii.getcode() == 200:
 				ascii = ascii.readlines()
 				if len(ascii) > int(self.settings['lines']) and chan != '#scroll':
-					await self.irc_error(chan, 'file is too big', 'take those {len(ascii):,} lines to #scroll')
+					await self.irc_error(chan, 'file is too big', f'take those {len(ascii):,} lines to #scroll')
 				else:
 					await self.action(chan, 'the ascii gods have chosen... ' + color(name, cyan))
 					for line in ascii:
@@ -364,4 +364,4 @@ try:
 	import img2irc
 except ImportError:
 	raise SystemExit('missing required \'img2irc\' file (https://github.com/ircart/scroll/blob/master/img2irc.py)')
-asyncio.run(Bot().connect())
\ No newline at end of file
+asyncio.run(Bot().connect())