diff --git a/root/defaults/alpine-mirror b/root/defaults/alpine-mirror
index 3f4d5e5..34c59a2 100755
--- a/root/defaults/alpine-mirror
+++ b/root/defaults/alpine-mirror
@@ -15,5 +15,5 @@ mkdir -p "$dest"
 --delete-after \
 --delay-updates \
 --timeout=600 \
---filter"merge /config/rsync-rules.txt" \
+--filter="merge /config/rsync-rules.txt" \
 "$src" "$dest"
\ No newline at end of file