diff --git a/html/pages/device/performance.inc.php b/html/pages/device/performance.inc.php
index da2056c54..dd5d15194 100644
--- a/html/pages/device/performance.inc.php
+++ b/html/pages/device/performance.inc.php
@@ -35,17 +35,19 @@ if (empty($vars['dtpickerto'])) {
 ?>
 
 <hr />
-<form method="post" role="form" id="map" class="form-inline">
-    <div class="form-group">
-        <label for="dtpickerfrom">From</label>
-        <input type="text" class="form-control" id="dtpickerfrom" name="dtpickerfrom" maxlength="16" value="<?php echo $vars['dtpickerfrom']; ?>" data-date-format="YYYY-MM-DD HH:mm">
-    </div>
-    <div class="form-group">
-        <label for="dtpickerto">To</label>
-        <input type="text" class="form-control" id="dtpickerto" name="dtpickerto" maxlength=16 value="<?php echo $vars['dtpickerto']; ?>" data-date-format="YYYY-MM-DD HH:mm">
-    </div>
-    <input type="submit" class="btn btn-default" id="submit" value="Update">
-</form>
+<div class="center-block">
+    <form method="post" role="form" id="map" class="form-inline">
+        <div class="form-group">
+            <label for="dtpickerfrom">From</label>
+            <input type="text" class="form-control" id="dtpickerfrom" name="dtpickerfrom" maxlength="16" value="<?php echo $vars['dtpickerfrom']; ?>" data-date-format="YYYY-MM-DD HH:mm">
+        </div>
+        <div class="form-group">
+            <label for="dtpickerto">To</label>
+            <input type="text" class="form-control" id="dtpickerto" name="dtpickerto" maxlength=16 value="<?php echo $vars['dtpickerto']; ?>" data-date-format="YYYY-MM-DD HH:mm">
+        </div>
+        <input type="submit" class="btn btn-default" id="submit" value="Update">
+    </form>
+</div>
 <hr />
 <script type="text/javascript">
     $(function () {