1 files changed, 3 insertions, 2 deletions

diff --git a/lib/python/qmk/cli/generate/rules_mk.py b/lib/python/qmk/cli/generate/rules_mk.py
index 570ef5a0d..2a7e91856 100755
--- a/lib/python/qmk/cli/generate/rules_mk.py
+++ b/lib/python/qmk/cli/generate/rules_mk.py
@@ -8,9 +8,10 @@ from qmk.path import is_keyboard, normpath
 
 info_to_rules = {
     'bootloader': 'BOOTLOADER',
-    'processor': 'MCU'
+    'processor': 'MCU',
 }
 
+
 @cli.argument('-o', '--output', arg_only=True, type=normpath, help='File to write to')
 @cli.argument('-q', '--quiet', arg_only=True, action='store_true', help="Quiet mode, only output error messages")
 @cli.argument('-kb', '--keyboard', help='Keyboard to generate config.h for.')
@@ -42,7 +43,7 @@ def generate_rules_mk(cli):
     if 'features' in kb_info_json:
         for feature, enabled in kb_info_json['features'].items():
             if feature == 'bootmagic_lite' and enabled:
-                rules_mk_lines.append(f'BOOTMAGIC_ENABLE := lite')
+                rules_mk_lines.append('BOOTMAGIC_ENABLE := lite')
             else:
                 feature = feature.upper()
                 enabled = 'yes' if enabled else 'no'