diff --git a/fhem/FHEM/31_LightScene.pm b/fhem/FHEM/31_LightScene.pm
index 4e210738e..0207a969f 100644
--- a/fhem/FHEM/31_LightScene.pm
+++ b/fhem/FHEM/31_LightScene.pm
@@ -175,7 +175,7 @@ LightScene_2html($)
 
   $ret .= "</table></td></tr>";
   $ret .= "</table>";
-  $ret .= "</br>";
+  $ret .= "<br>";
 
   return $ret;
 }
@@ -908,9 +908,9 @@ LightScene_editTable($) {
         in addition to reading names the list can also contain expressions of the form <code>abc -> xyz</code>
         or <code>get cba -> set uvw</code> to map reading abc to set xyz or get cba to set uvw. the list can be given as a
         string or as a perl expression enclosed in {} that returns this string.<br>
-        <code>attr myReceiver lightSceneParamsToSave volume,channel</code></br>
+        <code>attr myReceiver lightSceneParamsToSave volume,channel</code><br>
         <code>attr myHueDevice lightSceneParamsToSave {(Value($DEVICE) eq "off")?"state":"bri : xy"}</code></li>
-        <code>attr myDimmer lightSceneParamsToSave state@{if($value=~m/(\d+)/){$1}else{$value}}</code></br>
+        <code>attr myDimmer lightSceneParamsToSave state@{if($value=~m/(\d+)/){$1}else{$value}}</code><br>
       <li>lightSceneRestoreOnlyIfChanged<br>
         this attribute can be set on the lightscene and/or on the individual devices included in a scene.
         the device settings have precedence over the scene setting.<br>
diff --git a/fhem/FHEM/32_mailcheck.pm b/fhem/FHEM/32_mailcheck.pm
index 143c0df0c..a6cee1584 100755
--- a/fhem/FHEM/32_mailcheck.pm
+++ b/fhem/FHEM/32_mailcheck.pm
@@ -474,7 +474,7 @@ mailcheck_Read($)
   <a name="mailcheck_Readings"></a>
   <b>Readings</b>
   <ul>
-    <li>Subject</br>
+    <li>Subject<br>
       the subject of the last mail received</li>
   </ul><br>
 
diff --git a/fhem/FHEM/33_readingsGroup.pm b/fhem/FHEM/33_readingsGroup.pm
index a1f72a382..81aa5f390 100644
--- a/fhem/FHEM/33_readingsGroup.pm
+++ b/fhem/FHEM/33_readingsGroup.pm
@@ -961,7 +961,7 @@ readingsGroup_Attr($$$)
       <br>
         <code>define heizung readingsGroup t1:temperature t2:temperature t3:temperature<br>
         attr heizung notime 1<br>
-        attr heizung mapping {'t1.temperature' => 'Vorlauf', 't2.temperature' => 'R&amp;uuml;cklauf', 't3.temperature' => 'Zirkulation'}</br>
+        attr heizung mapping {'t1.temperature' => 'Vorlauf', 't2.temperature' => 'R&amp;uuml;cklauf', 't3.temperature' => 'Zirkulation'}<br>
         attr heizung style style="font-size:20px"<br>
       <br>
         define systemStatus readingsGroup sysstat<br>
@@ -1048,8 +1048,8 @@ readingsGroup_Attr($$$)
         Specify an sprintf style format string used to display the reading values. If the format string is undef
         this reading will be skipped. Can be given as a string, a perl expression returning a hash or a perl
         expression returning a string, e.g.:<br>
-          <code>attr temperatures valueFormat %.1f &deg;C</code></br>
-          <code>attr temperatures valueFormat { temperature => "%.1f &deg;C", humidity => "%.1f %" }</code></br>
+          <code>attr temperatures valueFormat %.1f &deg;C</code><br>
+          <code>attr temperatures valueFormat { temperature => "%.1f &deg;C", humidity => "%.1f %" }</code><br>
           <code>attr temperatures valueFormat { ($READING eq 'temperature')?"%.1f &deg;C":undef }</code></li>
       <li>nameIcon<br>
         Specify the icon to be used instead of the reading name. Can be a simple string or a perl expression enclosed
@@ -1058,8 +1058,8 @@ readingsGroup_Attr($$$)
       <li>valueIcon<br>
         Specify an icon to be used instead of the reading value. Can be a simple string or a perl expression enclosed
         in {} that returns a hash that maps reading value to the icon name. e.g.:<br>
-          <code>attr devices valueIcon $VALUE</code></br>
-          <code>attr devices valueIcon {state => '%VALUE'}</code></br>
+          <code>attr devices valueIcon $VALUE</code><br>
+          <code>attr devices valueIcon {state => '%VALUE'}</code><br>
           <code>attr devices valueIcon {state => '%devStateIcon'}</code>
           <code>attr rgMediaPlayer valueIcon { "playStatus.paused" => "rc_PLAY", "playStatus.playing" => "rc_PAUSE" }</code></li>
       <li>commands<br>
diff --git a/fhem/FHEM/33_readingsHistory.pm b/fhem/FHEM/33_readingsHistory.pm
index 9ee6ccff8..9e62027ba 100644
--- a/fhem/FHEM/33_readingsHistory.pm
+++ b/fhem/FHEM/33_readingsHistory.pm
@@ -666,9 +666,9 @@ readingsHistory_Attr($$$)
     <b>Set</b>
     <ul>
       <li>add ...<br>
-        directly add text as new line to history.</br>
+        directly add text as new line to history.<br>
       <li>clear<br>
-        clear the history.</br>
+        clear the history.<br>
     </ul><br>
 
   <a name="readingsHistory_Get"></a>
@@ -707,8 +707,8 @@ readingsHistory_Attr($$$)
         Specify an sprintf style format string used to display the reading values. If the format string is undef
         this reading will be skipped. Can be given as a string, a perl expression returning a hash or a perl
         expression returning a string, e.g.:<br>
-          <code>attr history valueFormat %.1f &deg;C</code></br>
-          <code>attr history valueFormat { temperature => "%.1f &deg;C", humidity => "%.1f %" }</code></br>
+          <code>attr history valueFormat %.1f &deg;C</code><br>
+          <code>attr history valueFormat { temperature => "%.1f &deg;C", humidity => "%.1f %" }</code><br>
           <code>attr history valueFormat { ($READING eq 'temperature')?"%.1f &deg;C":undef }</code></li>
       <li>rows<br>
         Number of history rows to show.</li>
diff --git a/fhem/FHEM/38_CO20.pm b/fhem/FHEM/38_CO20.pm
index b6367b4e6..d5e63f82f 100755
--- a/fhem/FHEM/38_CO20.pm
+++ b/fhem/FHEM/38_CO20.pm
@@ -310,7 +310,7 @@ usb-sensors-linux</a></li>
   <a name="CO20_Readings"></a>
   <b>Readings</b>
   <ul>
-    <li>voc</br>
+    <li>voc<br>
       CO2 equivalents in the range of 450-2000ppm.</li>
   </ul><br>