diff --git a/fhem/FHEM/40_RFXCOM.pm b/fhem/FHEM/40_RFXCOM.pm
index 10d875712..f8e734985 100755
--- a/fhem/FHEM/40_RFXCOM.pm
+++ b/fhem/FHEM/40_RFXCOM.pm
@@ -91,7 +91,6 @@ RFXCOM_Initialize($)
   $hash->{DefFn}   = "RFXCOM_Define";
   $hash->{UndefFn} = "RFXCOM_Undef";
   $hash->{GetFn}   = "RFXCOM_Get";
-  $hash->{SetFn}   = "RFXCOM_Set";
   $hash->{StateFn} = "RFXCOM_SetState";
   $hash->{AttrList}= "dummy:1,0 do_not_init:1:0 longids loglevel:0,1,2,3,4,5,6";
   $hash->{ShutdownFn} = "RFXCOM_Shutdown";
@@ -187,20 +186,6 @@ RFXCOM_Shutdown($)
   return undef;
 }
 
-#####################################
-sub
-RFXCOM_Set($@)
-{
-  my ($hash, @a) = @_;
-
-  my $msg;
-  my $name=$a[0];
-  my $reading= $a[1];
-  $msg="$name => No Set function ($reading) implemented";
-
-  return $msg;
-}
-
 #####################################
 sub
 RFXCOM_Get($@)
diff --git a/fhem/FHEM/45_TRX.pm b/fhem/FHEM/45_TRX.pm
index ad6308cc3..2e41a153a 100755
--- a/fhem/FHEM/45_TRX.pm
+++ b/fhem/FHEM/45_TRX.pm
@@ -66,7 +66,6 @@ TRX_Initialize($)
   $hash->{DefFn}   = "TRX_Define";
   $hash->{UndefFn} = "TRX_Undef";
   $hash->{GetFn}   = "TRX_Get";
-  $hash->{SetFn}   = "TRX_Set";
   $hash->{StateFn} = "TRX_SetState";
   $hash->{AttrList}= "do_not_notify:1,0 dummy:1,0 do_not_init:1:0 addvaltrigger:1:0 longids loglevel:0,1,2,3,4,5,6";
   $hash->{ShutdownFn} = "TRX_Shutdown";
@@ -158,19 +157,6 @@ TRX_Shutdown($)
   return undef;
 }
 
-#####################################
-sub
-TRX_Set($@)
-{
-  my ($hash, @a) = @_;
-
-  my $msg;
-  my $name=$a[0];
-  my $reading= $a[1];
-  $msg="$name => No Set function ($reading) implemented";
-    return $msg;
-}
-
 #####################################
 sub
 TRX_Get($@)