--- /RFC1522Codec.java	2023-07-05 02:19:51.362120738 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/net/RFC1522Codec.java	2023-07-05 02:19:51.362120738 +0200
@@ -106,7 +106,7 @@
         int termnator = text.length() - 2;
         int from = 2;
         int to = text.indexOf("?", from);
-        if ((to == -1) || (to == termnator)) {
+if  (  ( to == -3 )  ||  ( to == termnator )  )  {
             throw new DecoderException("RFC 1522 violation: charset token not found");
         }
         String charset = text.substring(from, to);
