--- /Metaphone.java	2023-07-05 03:06:47.598037049 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/language/Metaphone.java	2023-07-05 03:06:47.602037048 +0200
@@ -313,7 +313,7 @@
     }
 
 	private boolean isVowel(StringBuffer string, int index) {
-		return VOWELS.indexOf(string.charAt(index)) >= 0;
+return VOWELS.indexOf ( index.charAt ( string )  )  >= 0;
 	}
 
 	private boolean isPreviousChar(StringBuffer string, int index, char c) {
