diff --git a/fhem/docs/commandref.html b/fhem/docs/commandref.html
index cb6bea623..3cc5c392e 100644
--- a/fhem/docs/commandref.html
+++ b/fhem/docs/commandref.html
@@ -1778,9 +1778,9 @@ A line ending with \ will be concatenated with the next one, so long lines
         Putting them in a common sendpool will serialize sending the events.
         E.g. if you have three CUN's, you have to specify following
         attributes:<br>
-        attr CUL1 sendpool CUL1,CUL2,CUL3<br>
-        attr CUL2 sendpool CUL1,CUL2,CUL3<br>
-        attr CUL3 sendpool CUL1,CUL2,CUL3<br>
+        attr CUN1 sendpool CUN1,CUN2,CUN3<br>
+        attr CUN2 sendpool CUN1,CUN2,CUN3<br>
+        attr CUN3 sendpool CUN1,CUN2,CUN3<br>
         </li><br>
   </ul>
   <br>