diff --git a/fhem/CHANGED b/fhem/CHANGED
index 5a94a20fe..22cce123f 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.
+  - change:  73_NUKIBridge,74_NUKIDevice: fix Perlwarnings
   - bugfix:  38_CO20: fixed definition with serial number
   - bugfix:  32_withings: safer json decoding
   - feature: 38_netatmo: home notification settings
diff --git a/fhem/FHEM/73_NUKIBridge.pm b/fhem/FHEM/73_NUKIBridge.pm
index 0ef325827..8b859dfa6 100644
--- a/fhem/FHEM/73_NUKIBridge.pm
+++ b/fhem/FHEM/73_NUKIBridge.pm
@@ -46,7 +46,7 @@ use JSON;
 
 use HttpUtils;
 
-my $version     = "0.6.0";
+my $version     = "0.6.1";
 my $bridgeapi   = "1.5";
 
 
@@ -372,7 +372,7 @@ sub NUKIBridge_Distribution($$$) {
     
     Log3 $name, 5, "NUKIBridge ($name) - Response JSON: $json";
     Log3 $name, 5, "NUKIBridge ($name) - Response ERROR: $err";
-    Log3 $name, 5, "NUKIBridge ($name) - Response CODE: $param->{code}";
+    Log3 $name, 5, "NUKIBridge ($name) - Response CODE: $param->{code}" if( defined($param->{code}) and ($param->{code}) );
     
     readingsBeginUpdate($hash);
     
diff --git a/fhem/FHEM/74_NUKIDevice.pm b/fhem/FHEM/74_NUKIDevice.pm
index 52fec3633..419f2b46a 100644
--- a/fhem/FHEM/74_NUKIDevice.pm
+++ b/fhem/FHEM/74_NUKIDevice.pm
@@ -456,13 +456,13 @@ sub NUKIDevice_WriteReadings($$) {
         my ($state,$lockState);
         
         
-        if( $decode_json->{success} eq "true" ) {
+        if( defined($decode_json->{success}) and $decode_json->{success} eq "true" ) {
         
             $state = $hash->{helper}{lockAction};
             $lockState = $hash->{helper}{lockAction};
             NUKIDevice_ReadFromNUKIBridge($hash, "lockState", undef, $hash->{NUKIID} ) if( ReadingsVal($hash->{IODev}->{NAME},'bridgeType','Software') eq 'Software' );
             
-        } elsif ( $decode_json->{success} eq "false" ) {
+        } elsif ( defined($decode_json->{success}) and $decode_json->{success} eq "false" ) {
         
             $state = "error";
             NUKIDevice_ReadFromNUKIBridge($hash, "lockState", undef, $hash->{NUKIID} );