diff --git a/mk-udev-hwdb b/mk-udev-hwdb
index cfb3590..622f78e 100755
--- a/mk-udev-hwdb
+++ b/mk-udev-hwdb
@@ -4,8 +4,8 @@ BEGIN {
 	print "# brscan4-supported scanners (or interfaces of MFD)";
 	print "";
 }
-NF >= 3 && $1 ~ /^0[xX][[:xdigit:]]{4}$/ {
-	id = toupper( substr( $1, 3 ));
+NF >= 3 && $1 ~ /^0[xX][[:xdigit:]]+$/ {
+    id = toupper( substr( $1, length($1) - 3 ));
 	name = $4
 	gsub("\"", "", name)
 	print "# " name;