diff --git a/src/Smartsupp/ChatGenerator.php b/src/Smartsupp/ChatGenerator.php
index 6e0e86a..fda94f3 100644
--- a/src/Smartsupp/ChatGenerator.php
+++ b/src/Smartsupp/ChatGenerator.php
@@ -94,27 +94,27 @@ class ChatGenerator
     /**
      * @var string Chat X align.
      */
-    protected $align_x = 'right';
+    protected $align_x = null;
 
     /**
      * @var string Chat Y align.
      */
-    protected $align_y = 'bottom';
+    protected $align_y = null;
 
     /**
      * @var int Chat X offset.
      */
-    protected $offset_x = 10;
+    protected $offset_x = null;
 
     /**
      * @var int Chat Y offset.
      */
-    protected $offset_y = 100;
+    protected $offset_y = null;
 
     /**
      * @var string Widget type.
      */
-    protected $widget = 'widget';
+    protected $widget = null;
 
     /**
      * @var null|string Google analytics key value.
@@ -377,11 +377,16 @@ public function render($print_out = false)
             $params[] = "_smartsupp.ratingComment = " . ($this->rating_comment? 'true':'false') . ";  // default false";
         }
 
-        $params[] = "_smartsupp.alignX = '" . $this->align_x . "'; // or 'left'";
-        $params[] = "_smartsupp.alignY = '" . $this->align_y . "';  // by default 'bottom'";
-        $params[] = "_smartsupp.offsetX = " . (int) $this->offset_x . ";    // offset from left or right, default 10";
-        $params[] = "_smartsupp.offsetY = " . (int) $this->offset_y . ";    // offset from top, default 100";
-        $params[] = "_smartsupp.widget = '" . $this->widget . "'; // by default 'widget'";
+        if ($this->align_x && $this->align_y && $this->widget) {
+            $params[] = "_smartsupp.alignX = '" . $this->align_x . "'; // or 'left'";
+            $params[] = "_smartsupp.alignY = '" . $this->align_y . "';  // by default 'bottom'";
+            $params[] = "_smartsupp.widget = '" . $this->widget . "'; // by default 'widget'";
+        }
+
+        if ($this->offset_x && $this->offset_y) {
+            $params[] = "_smartsupp.offsetX = " . (int)$this->offset_x . ";    // offset from left / right, default 10";
+            $params[] = "_smartsupp.offsetY = " . (int)$this->offset_y . ";    // offset from top, default 100";
+        }
 
         // set detailed visitor's info
         // basic info
diff --git a/tests/ChatGeneratorTest.php b/tests/ChatGeneratorTest.php
index a4cb3df..acbd078 100644
--- a/tests/ChatGeneratorTest.php
+++ b/tests/ChatGeneratorTest.php
@@ -196,11 +196,7 @@ public function test_render_simple()
         $expected = "<script type=\"text/javascript\">
             var _smartsupp = _smartsupp || {};
             _smartsupp.key = 'XYZ123456';
-_smartsupp.alignX = 'right'; // or 'left'
-_smartsupp.alignY = 'bottom';  // by default 'bottom'
-_smartsupp.offsetX = 10;    // offset from left or right, default 10
-_smartsupp.offsetY = 100;    // offset from top, default 100
-_smartsupp.widget = 'widget'; // by default 'widget'
+
 window.smartsupp||(function(d) {
                 var s,c,o=smartsupp=function(){ o._.push(arguments)};o._=[];
                 s=d.getElementsByTagName('script')[0];c=d.createElement('script');
@@ -246,9 +242,9 @@ public function test_render_allParams()
 _smartsupp.ratingComment = true;  // default false
 _smartsupp.alignX = 'left'; // or 'left'
 _smartsupp.alignY = 'side';  // by default 'bottom'
-_smartsupp.offsetX = 20;    // offset from left or right, default 10
-_smartsupp.offsetY = 120;    // offset from top, default 100
 _smartsupp.widget = 'button'; // by default 'widget'
+_smartsupp.offsetX = 20;    // offset from left / right, default 10
+_smartsupp.offsetY = 120;    // offset from top, default 100
 _smartsupp.gaKey = 'UA\\x2d123456';
 _smartsupp.gaOptions = {'cookieDomain': '\\x2efoo\\x2ebar'};
 _smartsupp.hideWidget = true;