From aea1bf90b33f4a03a57546701599bdabf15b5b98 Mon Sep 17 00:00:00 2001
From: herrmannj <>
Date: Thu, 14 Jan 2016 11:46:48 +0000
Subject: [PATCH] 32_TechemHKV.pm: cosemtic undef warn msg removed

git-svn-id: https://svn.fhem.de/fhem/trunk@10500 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/32_TechemHKV.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fhem/FHEM/32_TechemHKV.pm b/fhem/FHEM/32_TechemHKV.pm
index f2dca0bbe..019731349 100644
--- a/fhem/FHEM/32_TechemHKV.pm
+++ b/fhem/FHEM/32_TechemHKV.pm
@@ -167,7 +167,7 @@ TechemHKV_Run(@) {
 sub
 TechemHKV_IOPatch(@) {
   my ($hash, $iodev) = @_;
-  return undef unless (AttrVal($iodev, "rfmode", undef) eq "WMBus_T");
+  return undef unless (AttrVal($iodev, "rfmode", '') eq "WMBus_T");
   # see if already patched
   readingsSingleUpdate($hash, "state", "listening", 1);
   return undef if ($defs{$iodev}{Clients} =~ /TechemHKV/ );