diff --git a/fhem/FHEM/98_PID20.pm b/fhem/FHEM/98_PID20.pm
index 56c876328..5b7296ae3 100644
--- a/fhem/FHEM/98_PID20.pm
+++ b/fhem/FHEM/98_PID20.pm
@@ -200,6 +200,7 @@ sub PID20_Define($$$)
     return "wrong syntax: define <name> PID20 " 
     . "<sensor>:reading:[regexp] <actor>[:cmd] ";
   }
+  setNotifyDev($hash,'global');
   return if !$init_done;
   return PID20_Check($hash, $a[2], $a[3]);
 }
@@ -223,6 +224,8 @@ sub PID20_Check($$$)
     PID20_Log $hash, 1, $msg;
     #return $msg;
     $err = 1;
+  } else {
+    setNotifyDev($hash,"global,$sensor");
   }
 
   # if reading of sender is unknown