diff --git a/Resources/Private/Partials/Backend/ButtonBar.html b/Resources/Private/Partials/Backend/ButtonBar.html
index 128d6a5cc0f5dc19186c25b6f694e97d09cd6ffd..daa2b82a012b5bffa649b59f62d32fa41c6da544 100644
--- a/Resources/Private/Partials/Backend/ButtonBar.html
+++ b/Resources/Private/Partials/Backend/ButtonBar.html
@@ -1,3 +1,6 @@
+
+<html xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers"
+ data-namespace-typo3-fluid="true">
<div class="btn-toolbar" role="toolbar" aria-label="">
<f:for each="{buttons}" as="buttonGroup">
<f:if condition="{buttonGroup -> f:count()} > 1">
@@ -14,3 +17,5 @@
</f:if>
</f:for>
</div>
+</html>
+