diff --git a/docs/commandref_frame.html b/docs/commandref_frame.html
index 3b583454c..dddd1a48b 100644
--- a/docs/commandref_frame.html
+++ b/docs/commandref_frame.html
@@ -1494,6 +1494,14 @@ The following local attributes are used by a wider range of devices:
         compression by default. Set httpcompress to 0 to disable this feature.
     </li><br>
 
+    <a name="keyFileName"></a>
+    <li>keyFileName<br>
+        FHEM modules store passwords and unique IDs in the file
+        FHEM/FhemUtils/uniqueID. In order to start multiple FHEM instances from
+        the same directory, you may set this attribute, whose value will
+        appended to FHEM/FhemUtils/
+    </li><br>
+
     <a name="logdir"></a>
     <li>logdir<br>
         If set, the %L attribute in the logfile attribute (or in the FileLog
@@ -1595,8 +1603,6 @@ The following local attributes are used by a wider range of devices:
 
     <li><a href="#title">title</a><br>
 
-    <li><a href="#fheminfo">uniqueID</a><br>
-
     <a name="useInet6"></a>
     <li>useInet6<br>
         try to use IPv6 in HttpUtils for communication. If the server does not
diff --git a/docs/commandref_frame_DE.html b/docs/commandref_frame_DE.html
index a22d2a11a..7cd402127 100644
--- a/docs/commandref_frame_DE.html
+++ b/docs/commandref_frame_DE.html
@@ -1596,6 +1596,14 @@ Die folgenden lokalen Attribute werden von mehreren Ger&auml;ten verwendet:
         httpcompress auf 0 setzt, wird die Komprimierung deaktiviert.
     </li><br>
 
+    <a name="keyFileName"></a>
+    <li>keyFileName<br>
+        FHEM Module speichern Passw&ouml;rter und IDs in der Datei 
+        FHEM/FhemUtils/uniqueID. Um mehrere FHEM-Instanzen im gleichen
+        Verzeichnis starten zu k&ouml;nnen, kann man dieses Attribut setzen,
+        dessen Wert an FHEM/FhemUtils/ angeh&auml;ngt wird.
+    </li><br>
+
     <a name="logdir"></a>
     <li>logdir<br>
         Falls gesetzt, wird %L in dem logfile Attribut (oder in der Dateinamen 
@@ -1710,8 +1718,6 @@ Die folgenden lokalen Attribute werden von mehreren Ger&auml;ten verwendet:
 
     <li><a href="#title">title</a><br>
 
-    <li><a href="#fheminfo">uniqueID</a>
-
     <a name="useInet6"></a>
     <li>useInet6<br>
         Die HttpUtils Routinen verwenden IPv6 f&uuml;r die Kommunikation, falls
diff --git a/fhem.pl b/fhem.pl
index 50ab73cb6..e7ff6cd22 100755
--- a/fhem.pl
+++ b/fhem.pl
@@ -316,6 +316,7 @@ my @globalAttrList = qw(
   genericDisplayType:switch,outlet,light,blind,speaker,thermostat
   holiday2we
   httpcompress:0,1
+  keyFileName
   language:EN,DE
   lastinclude
   latitude
@@ -340,7 +341,6 @@ my @globalAttrList = qw(
   stacktrace:1,0
   statefile
   title
-  uniqueID
   updateInBackground:1,0
   updateNoFileCheck:1,0
   useInet6:1,0
@@ -5044,7 +5044,9 @@ sub
 getKeyValue($)
 {
   my ($key) = @_;
-  my $fName = $attr{global}{modpath}."/FHEM/FhemUtils/uniqueID";
+  my $fName = AttrVal("global", "keyFileName", "uniqueID");
+  $fName =~ s/\.\.//g;
+  $fName = $attr{global}{modpath}."/FHEM/FhemUtils/$fName";
   my ($err, @l) = FileRead($fName);
   return ($err, undef) if($err);
   for my $l (@l) {
@@ -5058,7 +5060,9 @@ sub
 setKeyValue($$)
 {
   my ($key,$value) = @_;
-  my $fName = $attr{global}{modpath}."/FHEM/FhemUtils/uniqueID";
+  my $fName = AttrVal("global", "keyFileName", "uniqueID");
+  $fName =~ s/\.\.//g;
+  $fName = $attr{global}{modpath}."/FHEM/FhemUtils/$fName";
   my ($err, @old) = FileRead($fName);
   my @new;
   if($err) {