diff --git a/bin/chbg b/bin/chbg
index 5404393..93be32b 100755
--- a/bin/chbg
+++ b/bin/chbg
@@ -14,7 +14,7 @@ finput=$1
 
 read -r fw fh <<< "$fsize"
 (( fw > 3840 && fh > 2160 )) && {
-	finput="$(mktemp --dry-run).webp"
+	finput="$(mktemp "${TMPDIR:-/tmp}/chbg.XXXXXXXX.webp")"
 	trap 'rm -f "$finput"' EXIT
 	echo "WARNING: image too large, resizing ..."
 	# echo "DEBUG: resized image at $finput"