diff --git a/hm/scripts/rmf b/hm/scripts/rmf
index 1bbc2b7..fdf5583 100755
--- a/hm/scripts/rmf
+++ b/hm/scripts/rmf
@@ -1,6 +1,7 @@
 #!/usr/bin/env nix-shell
 #! nix-shell -i python3 --pure
 #! nix-shell -p python3 python3Packages.coloredlogs python3Packages.progressbar2
+# vim: filetype=python
 
 # Handles sync-conflict files
 
@@ -9,7 +10,6 @@ import logging
 import os
 import pickle
 import re
-import sys
 import zlib
 
 import coloredlogs
@@ -58,7 +58,7 @@ class Table:
 
 class Database:
     VERSION = 1
-    CONFLICT_PATTERN = re.compile("\.sync-conflict-\d{8}-\d{6}-\w{7}")
+    CONFLICT_PATTERN = re.compile(r"\.sync-conflict-\d{8}-\d{6}-\w{7}")
 
     def __init__(self, directory):
         self.version = Database.VERSION
@@ -470,12 +470,12 @@ if __name__ == "__main__":
                 assert isinstance(database, Database)
             except BaseException as e:
                 raise ValueError("Not a database file")
-            assert (
-                database.version <= Database.VERSION
-            ), "Version of the loaded database is too recent"
-            assert (
-                database.directory == args.directory
-            ), "Directory of the loaded database doesn't match"
+            assert database.version <= Database.VERSION, (
+                "Version of the loaded database is too recent"
+            )
+            assert database.directory == args.directory, (
+                "Directory of the loaded database doesn't match"
+            )
 
     if database is None:
         database = Database(args.directory)