diff --git a/wp-blog-header.php b/wp-blog-header.php
index c9e0e2907d..db0c0a7aa3 100644
--- a/wp-blog-header.php
+++ b/wp-blog-header.php
@@ -108,6 +108,7 @@ if ( !isset($doing_rss) || !$doing_rss ) {
 		    } else {
 		        header('HTTP/1.x 304 Not Modified');
 		    }
+			exit;
 		}
 	}
 }