diff --git a/fhem/CHANGED b/fhem/CHANGED
index 353e23d0c..597de19ae 100644
--- a/fhem/CHANGED
+++ b/fhem/CHANGED
@@ -1,5 +1,6 @@
 # Add changes at the top of the list. Keep it in ASCII, and 80-char wide.
 # Do not insert empty lines here, update check depends on it.
+ - bugfix:  73_NUKIBridge: Fix 503 Unavailable message
  - change:  88_HMCCU: Switched close to closed
  - bugfix:  70_Klafs: package main was removed from source code
  - bugfix:  31_LightScene: fixes for configDB (by Beta-User)
diff --git a/fhem/lib/FHEM/Devices/Nuki/Bridge.pm b/fhem/lib/FHEM/Devices/Nuki/Bridge.pm
index 1991bf52d..d8095a1f3 100644
--- a/fhem/lib/FHEM/Devices/Nuki/Bridge.pm
+++ b/fhem/lib/FHEM/Devices/Nuki/Bridge.pm
@@ -750,7 +750,7 @@ sub DistributionErrHandle2 {
             ::asyncOutput( $param->{cl}, "Request Error: $err\r\n" )
               if ( $param->{cl} && $param->{cl}{canAsyncOutput} );
 
-            return;
+            return $json;
         }
 
         ::readingsBulkUpdate( $hash, 'lastError',