diff --git a/koha-tmpl/intranet-tmpl/default/en/parameters/systempreferences.tmpl b/koha-tmpl/intranet-tmpl/default/en/parameters/systempreferences.tmpl
index 744676d1d9..c4a4b537e3 100644
--- a/koha-tmpl/intranet-tmpl/default/en/parameters/systempreferences.tmpl
+++ b/koha-tmpl/intranet-tmpl/default/en/parameters/systempreferences.tmpl
@@ -87,7 +87,7 @@
 <!-- TMPL_IF name="delete_confirm" -->
 <!------------------------------------------------------------------------------------------------>
 <table border=0 cellspacing=0 cellpadding=2>
-	<tr valign=top bgcolor=#99cc33>
+	<tr valign=top bgcolor="#99cc33">
 		<td background="<!-- TMPL_VAR NAME='themelang' -->/images/background-mem.gif"><b>Variable</b></td>
 		<td background="<!-- TMPL_VAR NAME='themelang' -->/images/background-mem.gif"><b><!-- TMPL_VAR name="searchfield" --></b></td>
 	</tr>
@@ -116,7 +116,7 @@
 </form>
 <!-- TMPL_VAR name="searchfield" -->
 <table border=0 cellspacing=0 cellpadding=2>
-<tr valign=top bgcolor=#99cc33>
+<tr valign=top bgcolor="#99cc33">
 	<td background="<!-- TMPL_VAR NAME='themelang' -->/images/background-mem.gif"><b>Variable</b></td>
 	<td background="<!-- TMPL_VAR NAME='themelang' -->/images/background-mem.gif"><b>Value</b></td>
 	<td background="<!-- TMPL_VAR NAME='themelang' -->/images/background-mem.gif"><b>Explanation</b></td>