diff --git a/mozilla/mailnews/mime/src/mimemoz2.cpp b/mozilla/mailnews/mime/src/mimemoz2.cpp
index 01dfd747921..a6d7b475e8a 100644
--- a/mozilla/mailnews/mime/src/mimemoz2.cpp
+++ b/mozilla/mailnews/mime/src/mimemoz2.cpp
@@ -1848,7 +1848,7 @@ nsresult GetMailNewsFont(MimeObject *obj, PRBool styleFixed, char *fontName, PRU
       if (NS_FAILED(rv))
         return rv;
 
-      rv = nsMsgI18NConvertFromUnicode(aCharset, unicode, convertedStr);
+      rv = nsMsgI18NConvertFromUnicode("UTF-8", unicode, convertedStr);
       PR_FREEIF(unicode);
       if (NS_FAILED(rv))
         return rv;
@@ -1875,7 +1875,7 @@ nsresult GetMailNewsFont(MimeObject *obj, PRBool styleFixed, char *fontName, PRU
       if (NS_FAILED(rv))
         return rv;
 
-      rv = nsMsgI18NConvertFromUnicode(aCharset, unicode, convertedStr);
+      rv = nsMsgI18NConvertFromUnicode("UTF-8", unicode, convertedStr);
       PR_FREEIF(unicode);
       if (NS_FAILED(rv))
         return rv;