diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6d00414..88be98e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,5 @@
+* Fixed check for rebasable URLs
+
 ## v0.2.5 (2023-11-08)
 * Added URL rebasing
 * Enforced Stringable interface
diff --git a/src/Singularity.php b/src/Singularity.php
index 692b0a2..a51a11d 100644
--- a/src/Singularity.php
+++ b/src/Singularity.php
@@ -13,6 +13,7 @@
 use DecodeLabs\Singularity\Uri;
 use DecodeLabs\Singularity\Url;
 use DecodeLabs\Singularity\Url\Generic as GenericUrl;
+use DecodeLabs\Singularity\Url\Rebasable;
 use DecodeLabs\Singularity\Urn;
 use DecodeLabs\Singularity\Urn\Generic as GenericUrn;
 use Psr\Http\Message\UriInterface as PsrUri;
@@ -85,7 +86,7 @@ public static function url(
         }
 
         if (
-            $output !== null &&
+            $output instanceof Rebasable &&
             $relativeTo !== null
         ) {
             $relativeTo = self::url($relativeTo);