diff --git a/bandcamp_dl/utils/unicode_slugify.py b/bandcamp_dl/utils/unicode_slugify.py
index a0307f3..69d31a7 100644
--- a/bandcamp_dl/utils/unicode_slugify.py
+++ b/bandcamp_dl/utils/unicode_slugify.py
@@ -81,7 +81,7 @@ def slugify(s, ok=SLUG_OK, lower=True, spaces=False, only_ascii=False, space_rep
 	if not spaces:
 		if space_replacement and space_replacement not in ok:
 			space_replacement = ok[0] if ok else ''
-		new = re.sub('[%s\s]+' % space_replacement, space_replacement, new)
+		new = re.sub(r'[%s\s]+' % space_replacement, space_replacement, new)
 	if lower:
 		new = new.lower()