diff --git a/Classes/ViewHelpers/ProgressViewHelper.php b/Classes/ViewHelpers/ProgressViewHelper.php
index 20ac46b..abbebae 100644
--- a/Classes/ViewHelpers/ProgressViewHelper.php
+++ b/Classes/ViewHelpers/ProgressViewHelper.php
@@ -57,7 +57,7 @@ class ProgressViewHelper extends AbstractViewHelper
         //handling famous off by one
         $activeStep -= $offset;
         //make sure our array index is numeric
-        $links = \array_values($links);
+        $links = \array_values((array)$links);
         if (!$linkCount) {
             $linkCount = \count($links);
         }