diff --git a/98_TadoAPI.pm b/98_TadoAPI.pm
index 4f41f01..5183079 100644
--- a/98_TadoAPI.pm
+++ b/98_TadoAPI.pm
@@ -1,5 +1,5 @@
 #===============================================================================
-# $Id: 98_TadoAPI.pm 100 2019-12-24 15:58:26Z psycho160 $
+# $Id: 98_TadoAPI.pm 101 2019-12-27 15:58:26Z psycho160 $
 #
 #         FILE: 98_TadoAPI.pm
 #
@@ -185,10 +185,10 @@ sub TadoAPI_Set(@) {
 
     } elsif( $cmd eq 'setZoneOverlay' ) {
       Log3 $name, 5, "TadoAPI $name" . ": " . "processing ($cmd)";
-      return "Need at least two parameters (ZoneID, Setting) - Setting: off=delete overlay; 0=heating power off; 1<=desired temperature (overlay)" if(@a < 4);
+      return "Need at least two parameters (ZoneID, Setting) - Setting: remove=delete overlay; 0=heating power off; 1<=desired temperature (overlay)" if(@a < 4);
       
-      if( $a[3] eq "off" ) {
-        TadoAPI_SetZoneOverlayById($hash, $value, "off");
+      if( $a[3] eq "remove" ) {
+        TadoAPI_SetZoneOverlayById($hash, $value, "remove");
       } elsif (defined($a[4])) {
         TadoAPI_SetZoneOverlayById($hash, $value, $a[3], $a[4]);
       } elsif ($a[3] >= 0) {
@@ -198,9 +198,9 @@ sub TadoAPI_Set(@) {
 
     } elsif( $cmd eq 'setAllOverlays' ) {
       Log3 $name, 5, "TadoAPI $name" . ": " . "processing ($cmd)";
-      return "Need at least one parameter (Setting) - Setting: off=delete overlay; 0=heating power off; 1<=desired temperature (overlay)" if(@a < 3);
-      if( $value eq "off" ) {
-        TadoAPI_SetAllOverlays($hash, "off");
+      return "Need at least one parameter (Setting) - Setting: remove=delete overlay; 0=heating power off; 1<=desired temperature (overlay)" if(@a < 3);
+      if( $value eq "remove" ) {
+        TadoAPI_SetAllOverlays($hash, "remove");
       } elsif ($value >= 0) {
         TadoAPI_SetAllOverlays($hash, $value);
       }
@@ -591,7 +591,7 @@ sub TadoAPI_SetZoneOverlayById(@){
     $dt += $duration if defined($duration);
 
     # remove overlay
-    if($setting eq "off"){
+    if($setting eq "remove"){
       $method = "DELETE";
       Log3 $name, 3, "TadoAPI $name" . ": " . "Deleting Overlay for Zone $zoneID";
     }
@@ -1502,13 +1502,13 @@ sub TadoAPI_readPassword($)
 
     <li>
       <code>set &lt;name&gt; setZoneOverlay &lt;zoneID&gt; &lt;setting&gt; [&lt;duration&gt;]</code><br>    
-      Setting: off delete overlay; 0 heating power off; &gt; 1 sets desired temperature to given value (overlay)
+      Setting: remove = delete overlay; 0 = heating power off; &gt; 1 sets desired temperature to given value (overlay)
     </li>
 
     <li>
       <code>set &lt;name&gt; setAllOverlays  &lt;setting&gt;</code><br>
       Same as above, but for all zones<br>
-      Setting: off delete overlay; 0 heating power off; &gt; 1 sets desired temperature to given value (overlay)</li>
+      Setting: remove = delete overlay; 0 = heating power off; &gt; 1 sets desired temperature to given value (overlay)</li>
     <br>
   </ul>
   <br>
diff --git a/README.md b/README.md
index c5e20dd..ce504fe 100644
--- a/README.md
+++ b/README.md
@@ -34,14 +34,14 @@ Sämtliche externen Aufrufe sind *nonblocking* ausgeführt.
 ### Overlay für Zone setzen
 `set setZoneOverlay <zonenID> <Wunschtemperatur>`
 
-**INFO:** unterstützte Werte der Wunschtemperatur: `off=delete overlay; 0=heating power off; 1<=desired temperature (overlay)`
+**INFO:** unterstützte Werte der Wunschtemperatur: `remove=delete overlay; 0=heating power off; 1<=desired temperature (overlay)`
 
 <img src="https://home.wolfmajer.at/wolfgit/Public/FHEM-Tado/raw/branch/master/doc/so.PNG" width="500" />
 
 ### Overlay für alle Zonen setzen
 `set setZoneOverlay <Wunschtemperatur>`
 
-**INFO:** unterstützte Werte der Wunschtemperatur: `off=delete overlay; 0=heating power off; 1<=desired temperature (overlay)`
+**INFO:** unterstützte Werte der Wunschtemperatur: `remove=delete overlay; 0=heating power off; 1<=desired temperature (overlay)`
 
 ### Tado Geräte anzeigen (z.B. Battery State)
 <img src="https://home.wolfmajer.at/wolfgit/Public/FHEM-Tado/raw/branch/master/doc/gzd.PNG" width="500" />
@@ -68,7 +68,7 @@ if (Value("Bewohner") eq "absent" && ReadingsVal("mytd","OverlayType_<zonenName>
 }elsif (Value("Bewohner") eq "home" && ReadingsVal("mytd","OverlayType_Heizung",0) eq "MANUAL")
 {
 	# jemand zu hause
-	fhem("set mytd setZoneOverlay <zonenID> off; set mytd setGeo <Mobile ID> off");
+	fhem("set mytd setZoneOverlay <zonenID> remove; set mytd setGeo <Mobile ID> off");
 	Log 3, "TadoAPI:  Bewohner anwesend - Overlay wird deaktiviert.";
 }
 }