diff --git a/lib/bars.js b/lib/bars.js
index 1d1c674..45dd25d 100644
--- a/lib/bars.js
+++ b/lib/bars.js
@@ -33,7 +33,7 @@ function getCompleteBars(tick) {
     var instrument = tick.instrument,
         time = tick && tick.time,
         tickTime = time ? new Date(time) : new Date(),
-        midPrice = tick && ((parseFloat(tick.bid) + parseFloat(tick.ask)) / 2,
+        midPrice = tick && (parseFloat(tick.bid) + parseFloat(tick.ask)) / 2,
         completeBars = [];
 
     initBars(instrument);