diff --git a/fhem/FHEM/10_CUL_HM.pm b/fhem/FHEM/10_CUL_HM.pm
index fe6817303..f21fc0b2d 100755
--- a/fhem/FHEM/10_CUL_HM.pm
+++ b/fhem/FHEM/10_CUL_HM.pm
@@ -3594,7 +3594,7 @@ sub CUL_HM_valvePosUpdt(@) {#update valve position periodically to please valve
     $hash->{helper}{vd}{nextF} = $tn;
   }
   do {
-    $msgCnt = ($msgCnt + 1)%256;
+    $msgCnt = $msgCnt++ %256;
     $idl = $hash->{helper}{vd}{idl}+$msgCnt;
     $lo = int(($idl*0x4e6d +12345)/0x10000)&0xff;
     $hi = ($hash->{helper}{vd}{idh}+$idl*198)&0xff;
diff --git a/fhem/FHEM/HMConfig.pm b/fhem/FHEM/HMConfig.pm
index ef1cd39b2..15c4f6101 100644
--- a/fhem/FHEM/HMConfig.pm
+++ b/fhem/FHEM/HMConfig.pm
@@ -1262,6 +1262,8 @@ $culHmChanSets{"HM-CC-RT-DN-BoM02"}     = $culHmChanSets{"HM-CC-RT-DN02"};
 $culHmChanSets{"HM-CC-RT-DN-BoM04"}     = $culHmChanSets{"HM-CC-RT-DN04"};
 $culHmChanSets{"HM-CC-RT-DN-BoM05"}     = $culHmChanSets{"HM-CC-RT-DN05"};
 
+$culHmChanSets{"HM-TC-IT-WM-W-EU02"}    = $culHmChanSets{"HM-CC-RT-DN02"};
+
 $culHmChanSets{"HM-ES-PMSw1-Pl04"}      = $culHmChanSets{"HM-ES-PMSw1-Pl03"};
 $culHmChanSets{"HM-ES-PMSw1-Pl05"}      = $culHmChanSets{"HM-ES-PMSw1-Pl03"};
 $culHmChanSets{"HM-ES-PMSw1-Pl06"}      = $culHmChanSets{"HM-ES-PMSw1-Pl03"};