diff --git a/phpBB/styles/prosilver/template/ucp_groups_manage.html b/phpBB/styles/prosilver/template/ucp_groups_manage.html
index eb431e9f3f..5772a735d3 100644
--- a/phpBB/styles/prosilver/template/ucp_groups_manage.html
+++ b/phpBB/styles/prosilver/template/ucp_groups_manage.html
@@ -56,7 +56,7 @@
 		<dt><label for="group_colour">{L_GROUP_COLOR}{L_COLON}</label><br /><span>{L_GROUP_COLOR_EXPLAIN}</span></dt>
 		<dd>
 			<input name="group_colour" type="text" id="group_colour" value="{GROUP_COLOUR}" size="6" maxlength="6" class="inputbox narrow" />
-			<span style="background-color: {GROUP_COLOUR};">&nbsp;&nbsp;&nbsp;</span>
+			<span style="background-color: #{GROUP_COLOUR};">&nbsp;&nbsp;&nbsp;</span>
 			[ <a href="#" id="color_palette_toggle">{L_COLOUR_SWATCH}</a> ]
 			<div id="color_palette_placeholder" class="hidden" data-orientation="h" data-height="12" data-width="15" data-target="#group_colour"></div>
 		</dd>