diff --git a/fhem/www/pgm2/darkCommon.css b/fhem/www/pgm2/darkCommon.css
index 3572afe95..02d857360 100644
--- a/fhem/www/pgm2/darkCommon.css
+++ b/fhem/www/pgm2/darkCommon.css
@@ -1,5 +1,7 @@
 @import url("dashboard_darkstyle.css");
 
+table.readings td:nth-child(2) { word-break: break-all; }
+
 /* jQuery-UI mods */
 div.ui-dialog { border:3px solid white; padding: 0.2em; }
 div.ui-dialog div.ui-dialog-titlebar { display:none; }
diff --git a/fhem/www/pgm2/defaultCommon.css b/fhem/www/pgm2/defaultCommon.css
index ba326126f..48b2d36bf 100644
--- a/fhem/www/pgm2/defaultCommon.css
+++ b/fhem/www/pgm2/defaultCommon.css
@@ -11,6 +11,7 @@ select   { font-family:Arial, sans-serif; font-size:16px;}
 a        { color:#278727; }
 img      { border-style:none; }
 .wide    { width:100%; }
+table.readings td:nth-child(2) { word-break: break-all; }
 
 table.block { border:1px solid gray; background: #F8F8E0; }
 table.block tr.odd { background: #F0F0D8; }