diff --git a/fhem/FHEM/01_FHEMWEB.pm b/fhem/FHEM/01_FHEMWEB.pm
index 4a2cd4860..01fe1f733 100644
--- a/fhem/FHEM/01_FHEMWEB.pm
+++ b/fhem/FHEM/01_FHEMWEB.pm
@@ -1280,6 +1280,7 @@ FW_digestCgi($)
     next if($pv eq ""); # happens when post forgot to set FW_ME
     $pv =~ s/\+/ /g;
     $pv =~ s/%([\dA-F][\dA-F])/chr(hex($1))/ige;
+    $pv = Encode::decode('UTF-8', $pv) if($unicodeEncoding);
     my ($p,$v) = split("=",$pv, 2);
     $v = "" if(!defined($v));
 
diff --git a/fhem/docs/commandref_frame.html b/fhem/docs/commandref_frame.html
index 5bc26c7d6..369ad4837 100644
--- a/fhem/docs/commandref_frame.html
+++ b/fhem/docs/commandref_frame.html
@@ -1609,8 +1609,12 @@ The following local attributes are used by a wider range of devices:
     <li>encoding<br>
         Set the internal encoding used for storing strings.
         Possible values: bytestream (default) and unicode.<br>
-        Note: Since not all modules were checked, if they work correctly with
-        the internal unicode encoding, this feature is experimental.
+        Notes:
+        <ul>
+          <li>Since not all modules were checked, if they work correctly with
+              the internal unicode encoding, this feature is experimental.</li>
+          <li>Changing the attribute value triggers a save and a shutdown restart</li>
+        </ul>
     </li><br>
 
     <a name="featurelevel"></a>
diff --git a/fhem/docs/commandref_frame_DE.html b/fhem/docs/commandref_frame_DE.html
index 34470fb9d..7dff88a89 100644
--- a/fhem/docs/commandref_frame_DE.html
+++ b/fhem/docs/commandref_frame_DE.html
@@ -1714,8 +1714,12 @@ Die folgenden lokalen Attribute werden von mehreren Ger&auml;ten verwendet:
     <li>encoding<br>
         W&auml;hlt das perl-interne Format, mit dem Strings kodiert sind.
         M&ouml;gliche Werte sind: bytestream (Voreinstellung) und unicode.<br>
-        Achtung: der Wert unicode ist experimentell, da nicht alle FHEM-Module
-        mit dieser Variante gepr&uuml;ft wurden.
+        Achtung:
+        <ul>
+        <li>der Wert unicode ist experimentell, da nicht alle FHEM-Module
+          mit dieser Variante gepr&uuml;ft wurden.</li>
+        <li>&auml;ndern des Wertes bewirkt ein save und ein shutdown restart.</li>
+        </ul>
     </li><br>
 
     <a name="featurelevel"></a>
diff --git a/fhem/fhem.pl b/fhem/fhem.pl
index e4cb5e73c..7cec95656 100755
--- a/fhem/fhem.pl
+++ b/fhem/fhem.pl
@@ -2877,11 +2877,10 @@ GlobalAttr($$$$)
   my ($type, $me, $name, $val) = @_;
 
   if($type eq "del") {
-    my %noDel = ( modpath=>1, verbose=>1, logfile=>1, configfile=>1 );
+    my %noDel = ( modpath=>1, verbose=>1, logfile=>1, configfile=>1, encoding=>1 );
     return "The global attribute $name cannot be deleted" if($noDel{$name});
     $featurelevel = 6.1 if($name eq "featurelevel");
     $haveInet6    = 0   if($name eq "useInet6"); # IPv6
-    $unicodeEncoding = undef if($name eq "encoding");
     delete($defs{global}{ignoreRegexpObj}) if($name eq "ignoreRegexp");
     return undef;
   }
@@ -2904,6 +2903,13 @@ GlobalAttr($$$$)
   if($name eq "encoding") {     # Should be called from fhem.cfg/configDB
     return "bad encoding parameter $val, good values are bytestream or unicode"
       if($val ne "unicode" && $val ne "bytestream");
+    if($init_done) {
+      InternalTimer(0, sub {
+        CommandSave(undef, undef);
+        CommandShutdown(undef, "restart");
+      }, undef);
+      return;
+    }
     $unicodeEncoding = ($val eq "unicode");
     $currlogfile = "";
   }