diff --git a/fhem/fhem.pl b/fhem/fhem.pl
index 4a1cb693ac..fe0572b8de 100755
--- a/fhem/fhem.pl
+++ b/fhem/fhem.pl
@@ -2232,7 +2232,7 @@
       my $arg= $a[2];
 
       # matches myReading1[:trigger2] { codecode1 }
-      my $regexi= '\s*([\w-]+)(:\S*)?\s+((\w+)\s+)?({.*?})\s*';
+      my $regexi= '\s*([\w-\.]+)(:\S*)?\s+((\w+)\s+)?({.*?})\s*';
       my $regexo= '^(' . $regexi . ')(,\s*(.*))*$';
 
       #Log 1, "arg is $arg";