diff --git a/src/prelexer.cpp b/src/prelexer.cpp
index b387d4d63..8790d2c3f 100644
--- a/src/prelexer.cpp
+++ b/src/prelexer.cpp
@@ -1626,7 +1626,11 @@ namespace Sass {
                 // class match
                 exactly <'.'>,
                 // single or double colon
-                optional < pseudo_prefix >
+                sequence <
+                  optional < pseudo_prefix >,
+                  // fix libsass issue 2376
+                  negate < exactly < url_kwd > >
+                >
               >,
               // accept hypens in token
               one_plus < sequence <