diff --git a/fhem/FHEM/00_MAXLAN.pm b/fhem/FHEM/00_MAXLAN.pm
index 2b69dc4e5..3ed3aa043 100755
--- a/fhem/FHEM/00_MAXLAN.pm
+++ b/fhem/FHEM/00_MAXLAN.pm
@@ -691,7 +691,7 @@ MAXLAN_Parse($$)
     readingsSingleUpdate( $hash, 'dutycycle', $hash->{dutycycle}, 1 );
 
     my $discarded = $args[1];
-    $hash->{freememoryslot} = $args[2];
+    $hash->{freememoryslot} = hex($args[2]);
     Log 5, "MAXLAN_Parse: dutycyle $hash->{dutycycle}, freememoryslot $hash->{freememoryslot}";
 
     Log 3, "MAXLAN_Parse: 1% rule: we sent too much, cmd is now in queue" if($hash->{dutycycle} == 100 && $hash->{freememoryslot} > 0);