diff --git a/inc/compatibility.php b/inc/compatibility.php
index b60704f298..4270c5d1f3 100644
--- a/inc/compatibility.php
+++ b/inc/compatibility.php
@@ -105,7 +105,7 @@ function str_starts_with(?string $haystack, ?string $needle)
 if (!function_exists('str_contains')) {
     function str_contains(?string $haystack, ?string $needle)
     {
-        return '' === $needle || false !== strpos($haystack, $needle);
+        return '' === $needle || false !== strpos($haystack, (string) $needle);
     }
 }