diff --git a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/client/web/public/index.html b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/client/web/public/index.html
index c5022681bd3597ad1c28681b52bd20e3057a3865..75a9e940b0dae34c0e2f5ad2619c1a18a0a06c2c 100644
--- a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/client/web/public/index.html
+++ b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/client/web/public/index.html
@@ -2,6 +2,8 @@
 <html>
 <head>
 <title>openBIS - Biology Information System for PhosphoNetX</title>
+
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <!--  force IE to go to document mode IE8 standards (and avoid the dreadful quirks-mode) -->
 <meta http-equiv="X-UA-Compatible" content="IE=edge" >