diff --git a/src/Picocrypt.go b/src/Picocrypt.go
index b3c2f1c..ee0aa74 100644
--- a/src/Picocrypt.go
+++ b/src/Picocrypt.go
@@ -1528,7 +1528,7 @@ func work() {
 			panic(err)
 		}
 		tmp, err = rsDecode(rs5, tmp)
-		if valid, _ := regexp.Match(`^v1\.\d{2}`, tmp); err != nil || !valid {
+		if valid, _ := regexp.Match(`^v\d\.\d{2}`, tmp); err != nil || !valid {
 			os.Remove(inputFile)
 			inputFile = strings.TrimSuffix(inputFile, ".tmp")
 			broken(nil, nil, "Password is incorrect or the file is not a volume", true)