diff --git a/README.md b/README.md
index 88af0c6..d740d5c 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,7 @@ The sylog plugin has been in development for well over a decade with increasing
 ## ChangeLog
 
 --- develop ---
+* issue#90: Can not show correct info when choose device filter in Syslog - Alert Log page 
 * issue#91: Page become blank after collecting multiple host syslog info
 * issue#94: Stored XSS in syslog_removal.php 
 
diff --git a/functions.php b/functions.php
index 3ed13fa..b5d909c 100644
--- a/functions.php
+++ b/functions.php
@@ -582,6 +582,7 @@ function sql_hosts_where($tab) {
 
 	$hostfilter     = '';
 	$hostfilter_log = '';
+	$hosts_array    = array();
 
 	if (!isempty_request_var('host') && get_nfilter_request_var('host') != 'null') {
 		$hostarray = explode(',', trim(get_nfilter_request_var('host')));
@@ -596,11 +597,15 @@ function sql_hosts_where($tab) {
 						array($host_id));
 
 					if (!empty($log_host)) {
-						$hostfilter_log .= ($hostfilter_log != '' ? ' AND ':'') . 'host = ' . db_qstr($log_host);
+						$hosts_array[] = db_qstr($log_host);
 					}
 				}
 			}
 
+			if (sizeof($hosts_array)) {
+				$hostfilter_log = ' host IN(' . implode(',', $hosts_array) . ')';
+			}
+
 			$hostfilter .= (strlen($hostfilter) ? ' AND ':'') . ' host_id IN(' . implode(',', $hostarray) . ')';
 		}
 	}
diff --git a/setup.php b/setup.php
index 78ed9e1..081c621 100644
--- a/setup.php
+++ b/setup.php
@@ -1176,13 +1176,34 @@ function syslog_utilities_action($action) {
 	if ($action == 'purge_syslog_hosts') {
 		$records = 0;
 
-		syslog_db_execute('DELETE FROM syslog_hosts WHERE host_id NOT IN (SELECT DISTINCT host_id FROM syslog UNION SELECT DISTINCT host_id FROM syslog_removed)');
+		syslog_db_execute('DELETE FROM syslog_hosts
+			WHERE host_id NOT IN (
+				SELECT DISTINCT host_id
+				FROM syslog
+				UNION
+				SELECT DISTINCT host_id
+				FROM syslog_removed
+			)');
 		$records += db_affected_rows($syslog_cnn);
 
-		syslog_db_execute('DELETE FROM syslog_host_facilities WHERE host_id NOT IN (SELECT DISTINCT host_id FROM syslog UNION SELECT DISTINCT host_id FROM syslog_removed)');
+		syslog_db_execute('DELETE FROM syslog_host_facilities
+			WHERE host_id NOT IN (
+				SELECT DISTINCT host_id
+				FROM syslog
+				UNION
+				SELECT DISTINCT host_id
+				FROM syslog_removed
+			)');
 		$records += db_affected_rows($syslog_cnn);
 
-		syslog_db_execute('DELETE FROM syslog_statistics WHERE host_id NOT IN (SELECT DISTINCT host_id FROM syslog UNION SELECT DISTINCT host_id FROM syslog_removed)');
+		syslog_db_execute('DELETE FROM syslog_statistics
+			WHERE host_id NOT IN (
+				SELECT DISTINCT host_id
+				FROM syslog
+				UNION
+				SELECT DISTINCT host_id
+				FROM syslog_removed
+			)');
 		$records += db_affected_rows($syslog_cnn);
 
 		raise_message('syslog_info', __('There were %s Device records removed from the Syslog database', $records, 'syslog'), MESSAGE_LEVEL_INFO);
diff --git a/syslog.php b/syslog.php
index b79727a..d8b9802 100644
--- a/syslog.php
+++ b/syslog.php
@@ -774,31 +774,40 @@ function get_syslog_messages(&$sql_where, $rows, $tab) {
 
 	$sql_where = '';
 
-	if (get_request_var('host') == 0 && $tab != 'syslog') {
-		// Show all hosts
-	} elseif (strpos(get_request_var('host'), '-1') !== false && $tab != 'syslog') {
-		// Show threshold type only plus matching hosts if any
-		$hosts = explode(',', get_request_var('host'));
+	if ($tab == 'alerts') {
+		if (get_request_var('host') == 0) {
+			// Show all hosts
+		} else {
+			$hosts = explode(',', get_request_var('host'));
 
-		if (cacti_sizeof($hosts) > 1) {
-			sql_hosts_where($tab);
+			$thold_pos = array_search('-1', $hosts, true);
 
-			if (strlen($hostfilter_log)) {
-				$sql_where .= 'WHERE ' . $hostfilter_log;
+			if ($thold_pos !== false) {
+				unset($hosts[$thold_pos]);
 			}
-		}
 
-		$ids = array_rekey(
-			syslog_db_fetch_assoc('SELECT id
-				FROM syslog_alert
-				WHERE method = 1'),
-			'id', 'id'
-		);
+			if (sizeof($hosts)) {
+				sql_hosts_where($tab);
 
-		if (cacti_sizeof($ids)) {
-			$sql_where .= ($sql_where == '' ? 'WHERE ':' AND ') . 'alert_id IN (' . implode(', ', $ids) . ')';
-		} else {
-			$sql_where .= ($sql_where == '' ? 'WHERE ':' AND ') . '0 = 1';
+				if (strlen($hostfilter_log)) {
+					$sql_where .= 'WHERE ' . $hostfilter_log;
+				}
+			}
+
+			if ($thold_pos !== false) {
+				$ids = array_rekey(
+					syslog_db_fetch_assoc('SELECT id
+						FROM syslog_alert
+						WHERE method = 1'),
+					'id', 'id'
+				);
+
+				if (cacti_sizeof($ids)) {
+					$sql_where .= ($sql_where == '' ? 'WHERE ':' OR ') . 'alert_id IN (' . implode(', ', $ids) . ')';
+				} elseif ($sql_where == '') {
+					$sql_where .= 'WHERE 0 = 1';
+				}
+			}
 		}
 	} elseif ($tab == 'syslog') {
 		if (!isempty_request_var('host')) {
@@ -808,8 +817,6 @@ function get_syslog_messages(&$sql_where, $rows, $tab) {
 				$sql_where .= 'WHERE ' . $hostfilter;
 			}
 		}
-	} elseif (!isempty_request_var('host') && $hostfilter_log != '') {
-		$sql_where .= 'WHERE ' . $hostfilter_log;
 	}
 
 	$sql_where .= ($sql_where == '' ? 'WHERE ' : ' AND ') .
@@ -823,18 +830,18 @@ function get_syslog_messages(&$sql_where, $rows, $tab) {
 
 	if (!isempty_request_var('filter')) {
 		if ($tab == 'syslog') {
-			$sql_where .= ($sql_where == '' ? 'WHERE ' : ' AND ') . "message LIKE " . db_qstr('%' . get_request_var('filter') . '%');
+			$sql_where .= ($sql_where == '' ? 'WHERE ' : ' AND ') . 'message LIKE ' . db_qstr('%' . get_request_var('filter') . '%');
 		} else {
-			$sql_where .= ($sql_where == '' ? 'WHERE ' : ' AND ') . "logmsg LIKE " . db_qstr('%' . get_request_var('filter') . '%');
+			$sql_where .= ($sql_where == '' ? 'WHERE ' : ' AND ') . 'logmsg LIKE ' . db_qstr('%' . get_request_var('filter') . '%');
 		}
 	}
 
 	if (get_request_var('eprogram') != '-1') {
-		$sql_where .= ($sql_where == '' ? 'WHERE ' : ' AND ') . "syslog.program_id = " . db_qstr(get_request_var('eprogram'));
+		$sql_where .= ($sql_where == '' ? 'WHERE ' : ' AND ') . 'syslog.program_id = ' . db_qstr(get_request_var('eprogram'));
 	}
 
 	if (get_request_var('efacility') != '-1') {
-		$sql_where .= ($sql_where == '' ? 'WHERE ' : ' AND ') . "syslog.facility_id = " . db_qstr(get_request_var('efacility'));
+		$sql_where .= ($sql_where == '' ? 'WHERE ' : ' AND ') . 'syslog.facility_id = ' . db_qstr(get_request_var('efacility'));
 	}
 
 	if (isset_request_var('epriority') && get_request_var('epriority') != '-1') {
diff --git a/syslog_process.php b/syslog_process.php
index 1c8209a..2e2c46f 100644
--- a/syslog_process.php
+++ b/syslog_process.php
@@ -164,7 +164,10 @@
 /* get a uniqueID to allow moving of records to done table */
 while (1) {
 	$uniqueID = rand(1, 127);
-	$count    = syslog_db_fetch_cell('SELECT count(*) FROM `' . $syslogdb_default . '`.`syslog_incoming` WHERE status=' . $uniqueID);
+
+	$count = syslog_db_fetch_cell('SELECT count(*)
+		FROM `' . $syslogdb_default . '`.`syslog_incoming`
+		WHERE status=' . $uniqueID);
 
 	if ($count == 0) {
 		break;