diff --git a/98_TadoAPI.pm b/98_TadoAPI.pm
index 20c7b3d..3d5f3f5 100644
--- a/98_TadoAPI.pm
+++ b/98_TadoAPI.pm
@@ -561,7 +561,7 @@ sub TadoAPI_NewTokenRequest {
             close($TOKENFILE);
 
             # token lifetime management
-            if (defined($decoded_data)){
+            if ( defined($decoded_data->{'expires_in'}) ){
               $hash->{TOKEN_LIFETIME} = gettimeofday() + $decoded_data->{'expires_in'};
             }
             $hash->{TOKEN_LIFETIME_HR} = localtime( $hash->{TOKEN_LIFETIME} );