diff --git a/fhem/fhem.pl b/fhem/fhem.pl
index 21c946f33..47547b37f 100755
--- a/fhem/fhem.pl
+++ b/fhem/fhem.pl
@@ -155,6 +155,7 @@ sub setGlobalAttrBeforeFork($);
 sub setReadingsVal($$$$);
 sub setAttrList($$);
 sub setDevAttrList($;$);
+sub setNotifyDev($$);
 sub toJSON($);
 sub utf8ToLatin1($);
 
@@ -5604,6 +5605,19 @@ notifyRegexpChanged($$;$)
   }
 }
 
+sub
+setNotifyDev($$)
+{
+  my ($hash, $ntfydev) = @_;
+
+  if($ntfydev) {
+    $hash->{NOTIFYDEV} = $ntfydev;
+  } else {
+    delete($hash->{NOTIFYDEV});
+  }
+  %ntfyHash = ();
+}
+
 sub
 configDBUsed()
 {