diff --git a/admin/themes/default/template/user_activity.tpl b/admin/themes/default/template/user_activity.tpl
index 03eae0181..1f989851f 100644
--- a/admin/themes/default/template/user_activity.tpl
+++ b/admin/themes/default/template/user_activity.tpl
@@ -14,16 +14,12 @@ var usersCache = new UsersCache({
   rootUrl: '{$ROOT_URL}'
 });
 
-usersCache.selectize(jQuery('[data-selectize=users]'));
-
-jQuery(".cancel-icon").click(function() {
-  jQuery(".user-selecter")[0].selectize.setValue(null);
-  return false;
-});
-
 const color_icons = ["icon-red", "icon-blue", "icon-yellow", "icon-purple", "icon-green"];
 const users_key = "{"Users"|@translate}"
 
+const line_key = "{'%s line'|translate}";
+const lines_key = "{'%s lines'|translate}";
+
 {*<-- Translation keys -->*}
 
 var actionType_add = "{'add'|translate}";
@@ -112,22 +108,46 @@ function get_user_activity() {
             /* console log to help debug */
             {* console.log(data); *}
 
-            setCreationDate(data.result[data.result.length-1].date, data.result[0].date);
+            setCreationDate(data.result['result_lines'][data.result['result_lines'].length-1].date, data.result['result_lines'][0].date);
             $(".loading").hide();
             
-            data.result.forEach(line => {
+            data.result['result_lines'].forEach(line => {
                 lineConstructor(line);
             });
-            displayLine(data);
+
+            fillUserFilter(data.result['filterable_users']);
         }, 
         error: (e) => {
             console.log("ajax call failed");
             console.log(e);
         }
-
     })
 }
 
+function fillUserFilter(user_tab) {
+
+  var index = 0;
+  for (const [key, value] of Object.entries(user_tab)) {
+    console.log(key, value);
+    if (value > 1) {
+      var newOption = "<option value=" + index +"> <span class='username_filter'>" + key + "</span> <span class='nb_lines_str'> (" + lines_key.replace("%s", value) + ") </span></option>";
+    } else {
+      var newOption = "<option value=" + index +"> <span class='username_filter'>" + key + "</span> <span class='nb_lines_str'> (" + line_key.replace("%s", value) + ") </span></option>";
+    }
+
+    index++;
+    $(".user-selecter").append(newOption);
+  }
+
+  jQuery('.user-selecter').selectize();
+
+  jQuery(".user-selecter")[0].selectize.setValue(null);
+
+  jQuery(".cancel-icon").click(function() {
+    jQuery(".user-selecter")[0].selectize.setValue(null);
+  });
+}
+
 function lineConstructor(line) {
     let newLine = $("#-1").clone();
 
@@ -612,8 +632,9 @@ function setCreationDate(startDate, endDate) {
 $(document).ready(function () {
 
     $('select').on('change', function (user) {
+      console.log($(".selectize-input .item")[0].innerText.split(" ")[0])
         try {
-            filterUsers($(".selectize-input .item")[0].innerHTML);
+            filterUsers($(".selectize-input .item")[0].innerText.split(" ")[0]);
         } catch (error) {
             showAllLines();
             let lines =  $(".line");
@@ -634,8 +655,8 @@ $(document).ready(function () {
         <div class="select-user">
             <span class="select-user-title"> {'Selected user'|translate} </span>
             
-            <select class="user-selecter" data-selectize="users" placeholder="{'none'|translate}"
-                single style="width:250px; height: 10px;"></select>
+            <select class="user-selecter" placeholder="{'none'|translate}" single style="width:250px; height: 10px;">
+            </select>
             
             <span class="icon-cancel cancel-icon"> </span>
 
@@ -759,7 +780,7 @@ $(document).ready(function () {
 
 .tab-title .action-title, 
 .line .action-section {
-    min-width: 310px;
+    min-width: 320px;
     max-width: 340px;
 }
 .tab-title .action-title {
@@ -768,7 +789,7 @@ $(document).ready(function () {
 
 .tab-title .date-title, 
 .line .date-section {
-    min-width: 240px;
+    min-width: 280px;
     max-width: 300px;
 }
 
diff --git a/include/ws_functions/pwg.php b/include/ws_functions/pwg.php
index 31e98d4ba..11b149d25 100644
--- a/include/ws_functions/pwg.php
+++ b/include/ws_functions/pwg.php
@@ -504,6 +504,7 @@ SELECT
   }
 
   $username_of = array();
+  $user_id_list = array();
   if (count($user_ids) > 0)
   {
     $query = '
@@ -514,6 +515,17 @@ SELECT
   WHERE `'.$conf['user_fields']['id'].'` IN ('.implode(',', array_keys($user_ids)).')
 ;';
     $username_of = query2array($query, 'user_id', 'username');
+
+    $query = '
+SELECT
+    performed_by,
+    count(*) as nb_lines
+  FROM '.ACTIVITY_TABLE.'
+  GROUP BY
+    performed_by
+    ;';
+
+    $user_id_list = query2array($query, 'performed_by', 'nb_lines');
   }
 
   foreach ($output_lines as $idx => $output_line)
@@ -522,7 +534,7 @@ SELECT
     {
       foreach ($output_line['object_id'] as $user_id)
       {
-        @$output_lines[$idx]['details']['users'][] = isset($username_of[$user_id]) ? $username_of[$user_id] : 'user #'.$user_id;
+        @$output_lines[$idx]['details']['users'][] = isset($username_of[$user_id]) ? $username_of[$user_id] : 'user#'.$user_id;
       }
 
       if (isset($output_lines[$idx]['details']['users']))
@@ -532,7 +544,22 @@ SELECT
     }
   }
 
-  return $output_lines;
+  $filterable_users = array();
+  foreach ($user_id_list as $key => $value) {
+    if (isset($username_of[$key])) {
+      $filterable_users[$username_of[$key]] = $value;
+    } else {
+      $filterable_users['user#'.$key] = $value;
+    }
+  }
+
+  unset($filterable_users['guest']);
+
+  // return $output_lines;
+  return array(
+    'result_lines' => $output_lines,
+    'filterable_users' => $filterable_users,
+  );
 }
 
 /**
diff --git a/language/en_UK/admin.lang.php b/language/en_UK/admin.lang.php
index 7107fd927..33d286fc1 100644
--- a/language/en_UK/admin.lang.php
+++ b/language/en_UK/admin.lang.php
@@ -1242,3 +1242,5 @@ $lang['Equivalent to deactivation. The user is still in the list, but can no lon
 $lang['%s MB'] = '%s MB';
 $lang['Your selection'] = 'Your selection';
 $lang['action succesfully performed.'] = 'action succesfully performed.';
+$lang['%s lines'] = "%s lines";
+$lang['%s line'] = "%s line";
diff --git a/language/fr_FR/admin.lang.php b/language/fr_FR/admin.lang.php
index 581215315..c437ffd28 100644
--- a/language/fr_FR/admin.lang.php
+++ b/language/fr_FR/admin.lang.php
@@ -1249,3 +1249,5 @@ $lang['Edit photo'] = 'Éditer la photo';
 $lang['Delete tag "%s"?'] = 'Supprimer le tag "%s" ?';
 $lang['Your selection'] = 'Votre selection';
 $lang['action succesfully performed.'] = 'action effectuée avec succès.';
+$lang['%s lines'] = "%s lignes";
+$lang['%s line'] = "%s ligne";