diff --git a/lib/protocol/timedata.js b/lib/protocol/timedata.js
index 5d27b22e..f0939620 100644
--- a/lib/protocol/timedata.js
+++ b/lib/protocol/timedata.js
@@ -1,5 +1,5 @@
 /*!
- * time.js - time management for bcoin
+ * timedata.js - time management for bcoin
  * Copyright (c) 2014-2015, Fedor Indutny (MIT License)
  * Copyright (c) 2014-2017, Christopher Jeffrey (MIT License).
  * https://github.com/bcoin-org/bcoin
@@ -64,12 +64,9 @@ TimeData.prototype.add = function add(id, time) {
   this.emit('sample', sample, this.samples.length);
 
   if (this.samples.length >= 5 && this.samples.length % 2 === 1) {
-    let median = this.samples[this.samples / 2 | 0];
+    let median = this.samples[this.samples.length >>> 1];
 
-    if (Math.abs(median) < 70 * 60) {
-      this.offset = median;
-    } else {
-      this.offset = 0;
+    if (Math.abs(median) >= 70 * 60) {
       if (!this.checked) {
         let match = false;
         for (let offset of this.samples) {
@@ -83,8 +80,10 @@ TimeData.prototype.add = function add(id, time) {
           this.emit('mismatch');
         }
       }
+      median = 0;
     }
 
+    this.offset = median;
     this.emit('offset', this.offset);
   }
 };