diff --git a/src/View/Helper/BootstrapHelper.php b/src/View/Helper/BootstrapHelper.php
index 3ff283a..f2c1f96 100644
--- a/src/View/Helper/BootstrapHelper.php
+++ b/src/View/Helper/BootstrapHelper.php
@@ -209,7 +209,7 @@ class BootstrapGeneric
     {
         $html = '';
         foreach ($params as $k => $v) {
-            if (!empty($k) && !empty($v)) {
+            if (!empty($k) && (isset($v) && $v !== '')) {
                 $html .= BootstrapGeneric::genHTMLParam($k, $v) . ' ';
             }
         }