diff --git a/lib/SimpleSAML/XHTML/Template.php b/lib/SimpleSAML/XHTML/Template.php
index e691c2af83879060c53e75c6c6dc069d0edb8537..600f9c364cc1150bcf6de94397f1c26f7fd28c9d 100644
--- a/lib/SimpleSAML/XHTML/Template.php
+++ b/lib/SimpleSAML/XHTML/Template.php
@@ -25,6 +25,10 @@ use Twig\Loader\FilesystemLoader;
 use Twig\TwigFilter;
 use Twig\TwigFunction;
 
+/**
+ * The content-property is set upstream, but this is not recognized by Psalm
+ * @psalm-suppress PropertyNotSetInConstructor
+ */
 class Template extends Response
 {
     /**