diff --git a/lib/python/qmk/flashers.py b/lib/python/qmk/flashers.py
index 9ecb5e4b9c..7ee1bc8de7 100644
--- a/lib/python/qmk/flashers.py
+++ b/lib/python/qmk/flashers.py
@@ -206,6 +206,8 @@ def _flash_uf2(file):
 
 
 def flasher(mcu, file):
+    # Avoid "expected string or bytes-like object, got 'WindowsPath" issues
+    file = file.as_posix()
     bl, details = _find_bootloader()
     # Add a small sleep to avoid race conditions
     time.sleep(1)