diff --git a/lib/server.js b/lib/server.js
index d2fab260f..387fc6d83 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -269,7 +269,7 @@ Server.prototype._start = function (config, launcher, preprocess, fileList,
         return logMap[m]
       })
       self.log.debug('Writing browser console line: %s', logString)
-      fs.write(browserLogFile, logString + '\n')
+      fs.writeSync(browserLogFile, logString + '\n')
     })
   }