diff --git a/src/parser.js b/src/parser.js
index 8d8eb3b..4a4c56c 100644
--- a/src/parser.js
+++ b/src/parser.js
@@ -2247,8 +2247,8 @@ PEG.parser = (function(){
         }
         var result0 = result1 !== null
           ? (function(inverted, parts) {
-                partsConverted = map(parts, function(part) { return part.data; });
-                rawText = "["
+                var partsConverted = map(parts, function(part) { return part.data; });
+                var rawText = "["
                   + inverted
                   + map(parts, function(part) { return part.rawText; }).join("")
                   + "]";
diff --git a/src/parser.pegjs b/src/parser.pegjs
index 2c4ea12..97b772f 100644
--- a/src/parser.pegjs
+++ b/src/parser.pegjs
@@ -232,8 +232,8 @@ simpleSingleQuotedCharacter
 
 class "character class"
   = "[" inverted:"^"? parts:(classCharacterRange / classCharacter)* "]" __ {
-      partsConverted = map(parts, function(part) { return part.data; });
-      rawText = "["
+      var partsConverted = map(parts, function(part) { return part.data; });
+      var rawText = "["
         + inverted
         + map(parts, function(part) { return part.rawText; }).join("")
         + "]";