diff --git a/FHEM/21_OWAD.pm b/FHEM/21_OWAD.pm
index fdd2c231b..55723ce5b 100644
--- a/FHEM/21_OWAD.pm
+++ b/FHEM/21_OWAD.pm
@@ -257,10 +257,14 @@ sub OWAD_InitializeDevice($) {
   my $name   = $hash->{NAME};
   
   #-- more colorful alarm signatures
-  CommandAttr (undef,"$name stateAL1 <span style=\"color:red\">&#x25BE;</span>");
-  CommandAttr (undef,"$name stateAH1 <span style=\"color:red\">&#x25B4;</span>");
-  CommandAttr (undef,"$name stateAL0 <span style=\"color:green\">&#x25BE;</span>");
-  CommandAttr (undef,"$name stateAH0 <span style=\"color:green\">&#x25B4;</span>");
+  CommandAttr (undef,"$name stateAL1 <span style=\"color:red\">&#x25BE;</span>")
+     if( !defined($attr{$name}{"stateAL1"} ));
+  CommandAttr (undef,"$name stateAH1 <span style=\"color:red\">&#x25B4;</span>")
+     if( !defined($attr{$name}{"stateAH1"} ));
+  CommandAttr (undef,"$name stateAL0 <span style=\"color:green\">&#x25BE;</span>")
+     if( !defined($attr{$name}{"stateAL0"} ));
+  CommandAttr (undef,"$name stateAH0 <span style=\"color:green\">&#x25B4;</span>")
+     if( !defined($attr{$name}{"stateAH0"} ));
   
   #-- Initial readings 
   @owg_val   = (0.0,0.0,0.0,0.0);
diff --git a/FHEM/21_OWSWITCH.pm b/FHEM/21_OWSWITCH.pm
index 1625ac138..e5c017f0b 100644
--- a/FHEM/21_OWSWITCH.pm
+++ b/FHEM/21_OWSWITCH.pm
@@ -253,7 +253,8 @@ sub OWSWITCH_InitializeDevice($) {
   my $name   = $hash->{NAME};
    
   #-- more colorful shortening signature
-  CommandAttr (undef,"$name stateS <span style=\"color:red\">&#x2607;</span>");   
+  CommandAttr (undef,"$name stateS <span style=\"color:red\">&#x2607;</span>")
+   if( !defined($attr{$name}{"stateS"} ));
    
   #-- Set channel names, channel units 
   for( my $i=0;$i<$cnumber{$attr{$name}{"model"}} ;$i++) { 
diff --git a/FHEM/21_OWTHERM.pm b/FHEM/21_OWTHERM.pm
index 5e7d6b3d9..0e6d518fc 100755
--- a/FHEM/21_OWTHERM.pm
+++ b/FHEM/21_OWTHERM.pm
@@ -242,8 +242,10 @@ sub OWTHERM_InitializeDevice($) {
   my @args;
   
   #-- more colorful alarm signatures
-  CommandAttr (undef,"$name stateAL <span style=\"color:red\">&#x25BE;</span>");
-  CommandAttr (undef,"$name stateAH <span style=\"color:red\">&#x25B4;</span>");
+  CommandAttr (undef,"$name stateAL <span style=\"color:red\">&#x25BE;</span>")
+     if( !defined($attr{$name}{"stateAL"} ));
+  CommandAttr (undef,"$name stateAH <span style=\"color:red\">&#x25B4;</span>")
+     if( !defined($attr{$name}{"stateAH"} ));
   
   #-- unit attribute defined ?
   $hash->{READINGS}{"temperature"}{UNIT} = defined($attr{$name}{"tempUnit"}) ? $attr{$name}{"tempUnit"} : "Celsius";