diff --git a/index.php b/index.php
index 6d09120..3f8aeec 100644
--- a/index.php
+++ b/index.php
@@ -1139,7 +1139,7 @@ public function upgrade_c($v1,$v2)
 		$upgrader_object = $v1;
 		$options = $v2;
 		
-		if($upgrader_object->result['destination_name']!=$this->internal['id'])
+		if( isset($upgrader_object->result['destination_name']) AND $upgrader_object->result['destination_name']!=$this->internal['id'])
 		{
 			return;			
 		}
diff --git a/readme.txt b/readme.txt
index ad619d1..ab1d6c5 100644
--- a/readme.txt
+++ b/readme.txt
@@ -62,6 +62,7 @@ To be updated
 = 2.1.7 =
 
 * Added alt tags and aria labels for screen readers to call to action button under posts and sitebar widgets and forms for accessibility.
+* Fixed a PHP warning
 
 = 2.1.6 =
 
@@ -186,6 +187,7 @@ To be updated
 = 2.1.7 =
 
 * Added alt tags and aria labels for screen readers to call to action button under posts and sitebar widgets and forms for accessibility
+* Fixed a PHP warning
 
 = 2.1.6 =