--- a/src/eric7/MicroPython/Tools/uf2conv.py	Mon Aug 28 14:08:41 2023 +0200
+++ b/src/eric7/MicroPython/Tools/uf2conv.py	Mon Aug 28 16:28:13 2023 +0200
@@ -271,7 +271,7 @@
             ]
         )
         for line in to_str(r).split("\n"):
-            words = re.split("\s+", line)
+            words = re.split(r"\s+", line)
             if len(words) >= 3 and words[1] == "2" and words[2] == "FAT":
                 drives.append(words[0])
     else: