diff --git a/index.js b/index.js
index 0fa1348..dff8ca4 100644
--- a/index.js
+++ b/index.js
@@ -49,7 +49,7 @@ function BlindsAccessory(log, config) {
   this.infoService
     .setCharacteristic(Characteristic.Manufacturer, 'Radoslaw Sporny')
     .setCharacteristic(Characteristic.Model, 'RaspberryPi GPIO Blinds')
-    .setCharacteristic(Characteristic.SerialNumber, 'Version 1.1.2');
+    .setCharacteristic(Characteristic.SerialNumber, 'Version 1.1.4');
 
   this.finalBlindsStateTimeout;
   this.togglePinTimeout;
@@ -159,7 +159,7 @@ BlindsAccessory.prototype.setTargetPosition = function(position, callback) {
 
 BlindsAccessory.prototype.togglePin = function(pin, duration) {
   if (rpio.read(pin) != this.activeState) rpio.write(pin, this.activeState);
-  if (this.durationOffset && (this.targetPosition == 0 || this.targetPosition == 100)) this.duration += this.durationOffset;
+  if (this.durationOffset && (this.targetPosition == 0 || this.targetPosition == 100)) duration += this.durationOffset;
   this.togglePinTimeout = setTimeout(function() {
     rpio.write(pin, this.initialState);
   }.bind(this), parseInt(duration));
diff --git a/package.json b/package.json
index c79ab1e..72e2d59 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "homebridge-gpio-blinds",
-  "version": "1.1.3",
+  "version": "1.1.4",
   "description": "Homebridge plugin to control blinds via Raspberry Pi GPIO pins",
   "license": "MIT",
   "keywords": [