diff --git a/scripts/post_mmc_image_script.sh b/scripts/post_mmc_image_script.sh
index f05d14f..ec60c80 100755
--- a/scripts/post_mmc_image_script.sh
+++ b/scripts/post_mmc_image_script.sh
@@ -26,6 +26,8 @@ chmod 644 "${COMPRESSED_IMAGE_PATH}" || exit 1
 
 cd "$(dirname "${COMPRESSED_IMAGE_PATH}")" || exit 1
 img_name=$(basename "${COMPRESSED_IMAGE_PATH}")
+# make sure to not leave zombies
+rm -f "${img_name}.md5"
 md5sum "${img_name}" > "${COMPRESSED_IMAGE_CHECKSUM_PATH}" || exit 1
 
 echo "All done"