diff --git a/modules/monitoring/public/css/module.less b/modules/monitoring/public/css/module.less
index 5f01f19fc..bf819378b 100644
--- a/modules/monitoring/public/css/module.less
+++ b/modules/monitoring/public/css/module.less
@@ -30,6 +30,7 @@ pre.pluginoutput {
   margin: 0em;
   padding: 1em;
   margin-bottom: 0.5em;
+  color: black;
 }
 
 table.objecthistory td {