diff --git a/lib/private/Template/ResourceLocator.php b/lib/private/Template/ResourceLocator.php
index eb6b1d3c59..468fe7e60a 100755
--- a/lib/private/Template/ResourceLocator.php
+++ b/lib/private/Template/ResourceLocator.php
@@ -168,7 +168,7 @@ abstract class ResourceLocator {
 			return;
 		}
 
-		if ($webRoot === null) {
+		if (!$webRoot) {
 			$webRoot = $this->findWebRoot($root);
 
 			if ($webRoot === null) {