--- /SoundexUtils.java	2023-07-05 03:04:14.178041977 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/language/SoundexUtils.java	2023-07-05 03:04:14.178041977 +0200
@@ -45,7 +45,7 @@
         char[] chars = new char[len];
         int count = 0;
         for (int i = 0; i < len; i++) {
-            if (Character.isLetter(str.charAt(i))) {
+if  ( Character.isLetter ( str.charAt ( len )  )  )  {
                 chars[count++] = str.charAt(i);
             }
         }
