diff --git a/lib/less/visitors/extend-visitor.js b/lib/less/visitors/extend-visitor.js
index 06f37c51..5792ef35 100644
--- a/lib/less/visitors/extend-visitor.js
+++ b/lib/less/visitors/extend-visitor.js
@@ -105,7 +105,7 @@ ProcessExtendsVisitor.prototype = {
     },
     checkExtendsForNonMatched: function(extendList) {
         extendList.filter(function(extend) {
-            return !extend.hasFoundMatches;
+            return !extend.hasFoundMatches && extend.parent_ids.length == 1;
         }).forEach(function(extend) {
                 var selector = "_unknown_";
                 try {