diff --git a/includes/common.inc b/includes/common.inc
index e29627bac9f870b17a742443ddea96f695e17c97..f72a826ebe61a54e39e4bec39293efbe56e7b7a8 100644
--- a/includes/common.inc
+++ b/includes/common.inc
@@ -2009,8 +2009,7 @@ function drupal_load_stylesheet($file, $optimize = NULL) {
       // Perform some safe CSS optimizations.
       $contents = preg_replace('<
         \s*([@{}:;,]|\)\s|\s\()\s* |  # Remove whitespace around separators, but keep space around parentheses.
-        /\*([^*\\\\]|\*(?!/))+\*/ |   # Remove comments that are not CSS hacks.
-        [\n\r]                        # Remove line breaks.
+        /\*([^*\\\\]|\*(?!/))+\*/     # Remove comments that are not CSS hacks.
         >x', '\1', $contents);
     }