diff --git a/fhem/FHEM/59_LuftdatenInfo.pm b/fhem/FHEM/59_LuftdatenInfo.pm
index 9f6257e7c..f70ff4920 100644
--- a/fhem/FHEM/59_LuftdatenInfo.pm
+++ b/fhem/FHEM/59_LuftdatenInfo.pm
@@ -92,6 +92,8 @@ sub LuftdatenInfo_Define($$) {
 
   delete($hash->{READINGS});
 
+  $DEF =~ s/\s+/ /g;
+
   if($MODE eq "remote"){
     return("Usage: define <name> $TYPE $MODE <SENSORID1> [<SENSORID2> ...]")
       if($DEF !~ m/^[\s\d]+$/);