diff --git a/fhem/FHEM/21_OWLCD.pm b/fhem/FHEM/21_OWLCD.pm
index 1594f601b..6b16cdcf7 100644
--- a/fhem/FHEM/21_OWLCD.pm
+++ b/fhem/FHEM/21_OWLCD.pm
@@ -172,12 +172,9 @@ sub OWLCD_Define ($$) {
   
   #-- Couple to I/O device
   AssignIoPort($hash);
-  if( (!defined($hash->{IODev}->{NAME})) || (!defined($hash->{IODev})) || (!defined($hash->{IODev}->{PRESENT})) ){
+  if( !defined($hash->{IODev}->{NAME}) | !defined($hash->{IODev}) ) {
     return "OWSWITCH: Warning, no 1-Wire I/O device found for $name.";
   }
-  if( $hash->{IODev}->{PRESENT} != 1 ){
-    return "OWSWITCH: Warning, 1-Wire I/O device ".$hash->{IODev}->{NAME}." not present for $name.";
-  }
   $modules{OWLCD}{defptr}{$id} = $hash;
   
   $hash->{STATE} = "Defined";