diff --git a/fhem/fhem.pl b/fhem/fhem.pl
index 784a5cd79..85e68e21b 100755
--- a/fhem/fhem.pl
+++ b/fhem/fhem.pl
@@ -3888,7 +3888,7 @@ readingsEndUpdate($$)
 
       my $trigger = $userReading->{trigger};
       if(defined($trigger)) {
-        my @fnd = grep { $_ && $_ =~ m/^$trigger/ } @{$hash->{CHANGED}};
+        my @fnd = grep { $_ && $_ =~ m/^$trigger$/ } @{$hash->{CHANGED}};
         next if(!@fnd);
       }