diff --git a/lib/Tools/ActivityPub/NCSignature.php b/lib/Tools/ActivityPub/NCSignature.php
index 82c3d31f6..f2c20e7dd 100644
--- a/lib/Tools/ActivityPub/NCSignature.php
+++ b/lib/Tools/ActivityPub/NCSignature.php
@@ -197,7 +197,7 @@ private function setIncomingClearSignature(NCSignedRequest $signedRequest): void
 			throw new SignatureException('missing elements in \'headers\'');
 		}
 
-		$target = strtolower($request->getMethod()) . ' ' . $request->getRequestUri();
+		$target = strtolower($request->getMethod()) . ' ' . urldecode($request->getRequestUri());
 		$estimated = ['(request-target): ' . $target];
 
 		foreach ($headers as $key) {