diff --git a/squizlabs/php_codesniffer/3.6/phpcs.xml.dist b/squizlabs/php_codesniffer/3.6/phpcs.xml.dist
index 89195e2b..4dd86586 100644
--- a/squizlabs/php_codesniffer/3.6/phpcs.xml.dist
+++ b/squizlabs/php_codesniffer/3.6/phpcs.xml.dist
@@ -16,4 +16,6 @@
     <file>src/</file>
     <file>tests/</file>
 
+    <exclude-pattern>config/reference\.php$</exclude-pattern>
+
 </ruleset>