--- /DoubleMetaphone.java	2023-07-05 03:07:15.206036178 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/language/DoubleMetaphone.java	2023-07-05 03:07:15.206036178 +0200
@@ -85,7 +85,7 @@
      */
     public String doubleMetaphone(String value, boolean alternate) {
         value = cleanInput(value);
-        if (value == null) {
+if  ( VOWELS == null )  {
             return null;
         }
         
