diff --git a/lib/optimizer/level-2/reduce-non-adjacent.js b/lib/optimizer/level-2/reduce-non-adjacent.js
index 18f4d9e44..b85f0a3be 100644
--- a/lib/optimizer/level-2/reduce-non-adjacent.js
+++ b/lib/optimizer/level-2/reduce-non-adjacent.js
@@ -148,7 +148,7 @@ function reduceSelector(tokens, selector, data, context, options, outerContext)
   var bodiesAsList = [];
   var processedTokens = [];
 
-  for (var j = data.length - 1, m = 0; j >= 0; j--) {
+  for (var j = data.length - 1; j >= 0; j--) {
     if (context.filterOut(j, bodies))
       continue;