diff --git a/WordPress-Theme/ruleset.xml b/WordPress-Theme/ruleset.xml
index d71792e5..80d5c2ac 100644
--- a/WordPress-Theme/ruleset.xml
+++ b/WordPress-Theme/ruleset.xml
@@ -18,5 +18,8 @@
 	</rule>
 
 
+	<!-- No ByteOrderMark allowed - important to prevent issues with content being sent before headers. -->
+	<rule ref="Generic.Files.ByteOrderMark" />
+
 
 </ruleset>