diff --git a/felamimail/inc/class.bofelamimail.inc.php b/felamimail/inc/class.bofelamimail.inc.php
index e73480f175..441fcd229d 100644
--- a/felamimail/inc/class.bofelamimail.inc.php
+++ b/felamimail/inc/class.bofelamimail.inc.php
@@ -383,6 +383,7 @@
 						$fixedMatch = str_replace('_', ' ', $match);
 						$string = str_replace($match, $fixedMatch, $string);
 					}
+					$string = str_replace('=?ISO8859-','=?ISO-8859-',$string);
 				}
 				return mb_decode_mimeheader($string);
 			} elseif(function_exists(iconv_mime_decode)) {