diff --git a/addressbook/inc/class.addressbook_ui.inc.php b/addressbook/inc/class.addressbook_ui.inc.php
index ec70d523f6..04d08ab26a 100644
--- a/addressbook/inc/class.addressbook_ui.inc.php
+++ b/addressbook/inc/class.addressbook_ui.inc.php
@@ -1562,7 +1562,7 @@ window.egw_LAB.wait(function() {
 		{
 			if(!is_numeric($key)) continue;
 			if(preg_match('/'.$GLOBALS['egw']->db->capabilities['case_insensitive_like'].
-				' '.$GLOBALS['egw']->db->quote('[a-z]%').'$/',$col_filter) == 1
+				' '.$GLOBALS['egw']->db->quote('[a-z]%').'$/i',$col_filter) == 1
 			)
 			{
 				unset($query['col_filter'][$key]);
diff --git a/api/js/etemplate/et2_extension_nextmatch.js b/api/js/etemplate/et2_extension_nextmatch.js
index 9458792187..7b6bb6dfa9 100644
--- a/api/js/etemplate/et2_extension_nextmatch.js
+++ b/api/js/etemplate/et2_extension_nextmatch.js
@@ -2859,10 +2859,10 @@ var et2_nextmatch_header_bar = (function(){ "use strict"; return et2_DOMWidget.e
 		if(this.nextmatch.options.settings.lettersearch)
 		{
 			jQuery("td",this.lettersearch).removeClass("lettersearch_active");
-			jQuery(filters.searchletter ? "td#"+filters.searchletter : "td.lettersearch[id='']").addClass("lettersearch_active");
+			jQuery(filters.searchletter ? "td#"+filters.searchletter : "td.lettersearch[id='']",this.lettersearch).addClass("lettersearch_active");
 
 			// Set activeFilters to current value
-			filters.searchletter = jQuery("td.lettersearch_active").attr("id");
+			filters.searchletter = jQuery("td.lettersearch_active",this.lettersearch).attr("id") || false;
 		}
 
 		// Reset flag