diff --git a/lib/php-css-parser/readme_moodle.txt b/lib/php-css-parser/readme_moodle.txt
index d8cd1bcf72e..fb15015b30d 100644
--- a/lib/php-css-parser/readme_moodle.txt
+++ b/lib/php-css-parser/readme_moodle.txt
@@ -14,4 +14,4 @@ cp -rf $tempdir/readme* lib/php-css-parser
 ```
 
 Apply the following patches:
-- None at this time
+- https://github.com/sabberworm/PHP-CSS-Parser/pull/173
diff --git a/lib/php-css-parser/src/Rule/Rule.php b/lib/php-css-parser/src/Rule/Rule.php
index c1bad65ebe3..3f038d9daab 100644
--- a/lib/php-css-parser/src/Rule/Rule.php
+++ b/lib/php-css-parser/src/Rule/Rule.php
@@ -108,7 +108,9 @@ class Rule implements Renderable, Commentable
             $oParserState->consume(';');
         }
 
-        $oParserState->consumeWhiteSpace();
+        // Begin Moodle Hack.
+        // $oParserState->consumeWhiteSpace();
+        // End Moodle Hack.
 
         return $oRule;
     }