diff --git a/lib/dictionary.js b/lib/dictionary.js
index 747ce83..e0dfe91 100644
--- a/lib/dictionary.js
+++ b/lib/dictionary.js
@@ -273,7 +273,7 @@ function loadFrequencyData() {
   console.log('Starting to read frequency data');
 
   var readFile = data.loadLeiden();
-  lines = readFile.split(/\r?\n/);
+  var lines = readFile.split(/\r?\n/);
 
   var i = 0;
   for (; i < lines.length; i++) {