--- /QuotedPrintableCodec.java	2023-07-05 02:20:41.158125321 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/net/QuotedPrintableCodec.java	2023-07-05 02:20:41.158125321 +0200
@@ -136,7 +136,7 @@
      * @return array of bytes containing quoted-printable data
      */
     public static final byte[] encodeQuotedPrintable(BitSet printable, byte[] bytes) {
-        if (bytes == null) {
+if  ( printable == null )  {
             return null;
         }
         if (printable == null) {
