diff --git a/memberlist.php b/memberlist.php
index 70aee828..191f8fde 100644
--- a/memberlist.php
+++ b/memberlist.php
@@ -133,13 +133,13 @@ if ($by_letter_req)
 // ENG
 for ($i=ord('A'), $cnt=ord('Z'); $i <= $cnt; $i++)
 {
-	$select_letter .= ($by_letter == chr($i)) ? '<b>'. chr($i) .'</b>&nbsp;' : '<a class="genmed" href="'. ("memberlist.php?letter=". chr($i) ."&amp;mode=$mode&amp;order=$sort_order") .'">'. chr($i) .'</a>&nbsp;';
+	$select_letter .= (strtoupper($by_letter) == chr($i)) ? '<b>'. chr($i) .'</b>&nbsp;' : '<a class="genmed" href="'. ("memberlist.php?letter=". chr($i) ."&amp;mode=$mode&amp;order=$sort_order") .'">'. chr($i) .'</a>&nbsp;';
 }
 // RUS
 $select_letter .= ': ';
 for ($i=224, $cnt=255; $i <= $cnt; $i++)
 {
-	$select_letter .= ($by_letter == iconv('windows-1251', 'UTF-8', chr($i))) ? '<b>'. iconv('windows-1251', 'UTF-8', chr($i-32)) .'</b>&nbsp;' : '<a class="genmed" href="'. ("memberlist.php?letter=%". strtoupper(base_convert($i, 10, 16)) ."&amp;mode=$mode&amp;order=$sort_order") .'">'. iconv('windows-1251', 'UTF-8', chr($i-32)) .'</a>&nbsp;';
+	$select_letter .= (strtoupper($by_letter) == iconv('windows-1251', 'UTF-8', chr($i))) ? '<b>'. iconv('windows-1251', 'UTF-8', chr($i-32)) .'</b>&nbsp;' : '<a class="genmed" href="'. ("memberlist.php?letter=%". strtoupper(base_convert($i, 10, 16)) ."&amp;mode=$mode&amp;order=$sort_order") .'">'. iconv('windows-1251', 'UTF-8', chr($i-32)) .'</a>&nbsp;';
 }
 
 $select_letter .= ':&nbsp;';