diff --git a/web/skins/classic/views/monitor.php b/web/skins/classic/views/monitor.php
index 1430b93bf..1a91e2324 100644
--- a/web/skins/classic/views/monitor.php
+++ b/web/skins/classic/views/monitor.php
@@ -838,9 +838,9 @@ echo htmlOptions(ZM\Group::get_dropdown_options( ), $monitor->GroupIds() );
         }
 ?>
           <tr><td><?php echo translate('V4LMultiBuffer') ?></td><td>
-            <input type="radio" name="newMonitor[V4LMultiBuffer]" id="newMonitor[V4LMultiBuffer]1" value="1" <?php echo ( $monitor->V4LMultiBuffer() == 1 ? 'checked="checked"' : '' ) ?>/>
+            <input type="radio" name="newMonitor[V4LMultiBuffer]" id="newMonitor[V4LMultiBuffer]1" value="1" <?php echo ( $monitor->V4LMultiBuffer() == '1' ? 'checked="checked"' : '' ) ?>/>
             <label for="newMonitor[V4LMultiBuffer]1">Yes</label>
-            <input type="radio" name="newMonitor[V4LMultiBuffer]" id="newMonitor[V4LMultiBuffer]0" value="0" <?php echo ( $monitor->V4LMultiBuffer() == 0 ? 'checked="checked"' : '' ) ?>/>
+            <input type="radio" name="newMonitor[V4LMultiBuffer]" id="newMonitor[V4LMultiBuffer]0" value="0" <?php echo ( $monitor->V4LMultiBuffer() == '0' ? 'checked="checked"' : '' ) ?>/>
             <label for="newMonitor[V4LMultiBuffer]0">No</label>
             <input type="radio" name="newMonitor[V4LMultiBuffer]" id="newMonitor[V4LMultiBuffer]" value="" <?php echo ( $monitor->V4LMultiBuffer() ? 'checked="checked"' : '' ) ?>/>
             <label for="newMonitor[V4LMultiBuffer]">Use Config Value</label>