diff --git a/src/data/mime_db/text/xml b/src/data/mime_db/text/xml
index 24459cf5c7..7db544ecf6 100644
--- a/src/data/mime_db/text/xml
+++ b/src/data/mime_db/text/xml
@@ -4,7 +4,7 @@ resource(0, "BEOS:TYPE") #'MIMS' "application/x-vnd.Be-meta-mime";
 resource(1, "META:TYPE") "text/xml";
 
 resource(2, "META:SNIFF_RULE") #'CSTR' array {
-	"0.251 [0:15] (\"<?xml\" | \"<\\000x\\000m\\000l\")"
+	"0.251 [0:15] (\"<?xml\" | \"<\\000?\\000x\\000m\\000l\")"
 };
 
 resource(2, "META:S:DESC") #'MSDC' "XML file";