diff --git a/lib/SimpleSAML/XHTML/Template.php b/lib/SimpleSAML/XHTML/Template.php
index 83cb7658f966d299e6515179a2d9d7a20774ac05..41567c5f5947c78c4f42c0b8a67216e4b925bfbe 100644
--- a/lib/SimpleSAML/XHTML/Template.php
+++ b/lib/SimpleSAML/XHTML/Template.php
@@ -26,6 +26,10 @@ use Twig\TwigFilter;
 use Twig\TwigFunction;
 use Webmozart\Assert\Assert;
 
+/**
+ * The content-property is set upstream, but this is not recognized by Psalm
+ * @psalm-suppress PropertyNotSetInConstructor
+ */
 class Template extends Response
 {
     /**