diff --git a/tools/free_space.py b/tools/free_space.py
index 6d4ac00c4..35ab69902 100755
--- a/tools/free_space.py
+++ b/tools/free_space.py
@@ -28,7 +28,7 @@ def main():
 	if print_bank not in {'all', 'none'}:
 		try:
 			print_bank = (int(print_bank[2:], 16)
-				if print_bank.startswith('0x') or print_bank.startswith('0X')
+				if print_bank.startswith(('0x', '0X'))
 				else int(print_bank))
 		except ValueError:
 			error = f'Error: invalid BANK: {print_bank}'