diff --git a/dev/setup/codesniffer/ruleset.xml b/dev/setup/codesniffer/ruleset.xml
index 38f7f484dac..a43e4dde82b 100644
--- a/dev/setup/codesniffer/ruleset.xml
+++ b/dev/setup/codesniffer/ruleset.xml
@@ -10,6 +10,7 @@
 	<exclude-pattern type="relative">htdocs/conf.php</exclude-pattern>
 	<exclude-pattern type="relative">*/nltechno*</exclude-pattern>
 	<exclude-pattern type="relative">*/htdocs/includes</exclude-pattern>
+	<exclude-pattern type="relative">*.min.css</exclude-pattern>
 
 		<!-- List of all tests -->