diff --git a/pio/rename-firmware.py b/pio/rename-firmware.py
index c7644e3f8..49f86d79e 100644
--- a/pio/rename-firmware.py
+++ b/pio/rename-firmware.py
@@ -4,6 +4,9 @@ import os
 def obj_ren_after_bin(source, target, env):
     #    print("Rename firmware.bin")
     base_dir = os.path.dirname(str(target[0]))
-    os.rename(str(target[0]), "{}{}{}.bin".format(base_dir, os.path.sep, str(target[0]).split(os.path.sep)[1]))
+    new_file = "{}{}{}.bin".format(base_dir, os.path.sep, str(target[0]).split(os.path.sep)[1])
+    if os.path.isfile(new_file):
+        os.remove(new_file)
+    os.rename(str(target[0]), new_file)
 
 env.AddPostAction("$BUILD_DIR/${PROGNAME}.bin", [obj_ren_after_bin])