diff --git a/src/lib/css-parse.html b/src/lib/css-parse.html
index d760d7557f..75e82ba21b 100644
--- a/src/lib/css-parse.html
+++ b/src/lib/css-parse.html
@@ -171,7 +171,8 @@
 
     // helper regexp's
     _rx: {
-      comments: /\/\*[^*]*\*+([^/*][^*]*\*+)*\//gim,
+      // warning, this regex contains load-bearing escapes
+      comments: /\/\*[^*]*\*+([^\/*][^*]*\*+)*\//gim,
       port: /@import[^;]*;/gim,
       customProp: /(?:^[^;\-\s}]+)?--[^;{}]*?:[^{};]*?(?:[;\n]|$)/gim,
       mixinProp:  /(?:^[^;\-\s}]+)?--[^;{}]*?:[^{};]*?{[^}]*?}(?:[;\n]|$)?/gim,