diff --git a/app/Controller/Customfilter.php b/app/Controller/Customfilter.php
index c403cb4b8..80d18a179 100644
--- a/app/Controller/Customfilter.php
+++ b/app/Controller/Customfilter.php
@@ -115,6 +115,10 @@ class Customfilter extends Base
         if (! isset($values['is_shared'])) {
             $values += array('is_shared' => 0);
         }
+        
+        if (! isset($values['append'])) {
+            $values += array('append' => 0);
+        }
 
         list($valid, $errors) = $this->customFilter->validateModification($values);
 
diff --git a/app/Model/CustomFilter.php b/app/Model/CustomFilter.php
index 2c485247c..b7ccdf99f 100644
--- a/app/Model/CustomFilter.php
+++ b/app/Model/CustomFilter.php
@@ -40,7 +40,8 @@ class CustomFilter extends Base
                 self::TABLE.'.project_id',
                 self::TABLE.'.filter',
                 self::TABLE.'.name',
-                self::TABLE.'.is_shared'
+                self::TABLE.'.is_shared',
+                self::TABLE.'.append'
             )
             ->asc(self::TABLE.'.name')
             ->join(User::TABLE, 'id', 'user_id')
diff --git a/app/Schema/Mysql.php b/app/Schema/Mysql.php
index 37894dbd2..6ece27852 100644
--- a/app/Schema/Mysql.php
+++ b/app/Schema/Mysql.php
@@ -6,7 +6,12 @@ use PDO;
 use Core\Security;
 use Model\Link;
 
-const VERSION = 90;
+const VERSION = 91;
+
+function version_91($pdo)
+{
+    $pdo->exec("ALTER TABLE custom_filters ADD COLUMN append TINYINT(1) DEFAULT 0");
+}
 
 function version_90($pdo)
 {
diff --git a/app/Schema/Postgres.php b/app/Schema/Postgres.php
index 2a446e408..d4fae317c 100644
--- a/app/Schema/Postgres.php
+++ b/app/Schema/Postgres.php
@@ -6,7 +6,12 @@ use PDO;
 use Core\Security;
 use Model\Link;
 
-const VERSION = 70;
+const VERSION = 71;
+
+function version_71($pdo)
+{
+    $pdo->exec("ALTER TABLE custom_filters ADD COLUMN append BOOLEAN DEFAULT '0'");
+}
 
 function version_70($pdo)
 {
diff --git a/app/Schema/Sqlite.php b/app/Schema/Sqlite.php
index 633c90a71..2b9ceadc6 100644
--- a/app/Schema/Sqlite.php
+++ b/app/Schema/Sqlite.php
@@ -6,7 +6,12 @@ use Core\Security;
 use PDO;
 use Model\Link;
 
-const VERSION = 85;
+const VERSION = 86;
+
+function version_86($pdo)
+{
+    $pdo->exec("ALTER TABLE custom_filters ADD COLUMN append INTEGER DEFAULT 0");
+}
 
 function version_85($pdo)
 {
diff --git a/app/Template/custom_filter/add.php b/app/Template/custom_filter/add.php
index d4e102b31..61df148c8 100644
--- a/app/Template/custom_filter/add.php
+++ b/app/Template/custom_filter/add.php
@@ -15,6 +15,8 @@
     <?php if ($this->user->isProjectManagementAllowed($project['id'])): ?>
         <?= $this->form->checkbox('is_shared', t('Share with all project members'), 1) ?>
     <?php endif ?>
+    
+    <?= $this->form->checkbox('append', t('Append filter (instead of replacement)'), 1) ?>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue">
diff --git a/app/Template/custom_filter/edit.php b/app/Template/custom_filter/edit.php
index 7525574c2..9d296b845 100644
--- a/app/Template/custom_filter/edit.php
+++ b/app/Template/custom_filter/edit.php
@@ -21,7 +21,9 @@
     <?php else: ?>
         <?= $this->form->hidden('is_shared', $values) ?>
     <?php endif ?>
-
+    
+    <?= $this->form->checkbox('append', t('Append filter (instead of replacement)'), 1, $values['append'] == 1) ?>
+    
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue">
         <?= t('or') ?>
diff --git a/app/Template/custom_filter/index.php b/app/Template/custom_filter/index.php
index a53d0d0a8..c857e206e 100644
--- a/app/Template/custom_filter/index.php
+++ b/app/Template/custom_filter/index.php
@@ -8,6 +8,7 @@
             <th><?= t('Name') ?></th>
             <th><?= t('Filter') ?></th>
             <th><?= t('Shared') ?></th>
+            <th><?= t('Append/Replace') ?></th>
             <th><?= t('Owner') ?></th>
             <th><?= t('Actions') ?></th>
         </tr>
@@ -22,6 +23,13 @@
                 <?= t('No') ?>
             <?php endif ?>
             </td>
+            <td>
+            <?php if ($filter['append'] == 1): ?>
+                <?= t('Append') ?>
+            <?php else: ?>
+                <?= t('Replace') ?>
+            <?php endif ?>
+            </td>
             <td><?= $this->e($filter['owner_name'] ?: $filter['owner_username']) ?></td>
             <td>
                 <?php if ($filter['user_id'] == $this->user->getId() || $this->user->isProjectManagementAllowed($project['id'])): ?>
@@ -37,4 +45,4 @@
 </div>
 <?php endif ?>
 
-<?= $this->render('custom_filter/add', array('project' => $project, 'values' => $values, 'errors' => $errors)) ?>
\ No newline at end of file
+<?= $this->render('custom_filter/add', array('project' => $project, 'values' => $values, 'errors' => $errors)) ?>
diff --git a/app/Template/project/filters.php b/app/Template/project/filters.php
index c22d7b4f2..eee691c53 100644
--- a/app/Template/project/filters.php
+++ b/app/Template/project/filters.php
@@ -68,7 +68,7 @@
             <i class="fa fa-caret-down"></i> <a href="#" class="dropdown-menu"><?= t('My filters') ?></a>
             <ul>
                 <?php foreach ($custom_filters_list as $filter): ?>
-                    <li><a href="#" class="filter-helper" data-filter='<?= $this->e($filter['filter']) ?>'><?= $this->e($filter['name']) ?></a></li>
+                    <li><a href="#" class="filter-helper" data-<?php if($filter['append']): ?><?= 'append-' ?><?php endif ?>filter='<?= $this->e($filter['filter']) ?>'><?= $this->e($filter['name']) ?></a></li>
                 <?php endforeach ?>
             </ul>
             </div>