diff --git a/support.inc.php b/support.inc.php
index 7b81b28..59adb8b 100644
--- a/support.inc.php
+++ b/support.inc.php
@@ -40,7 +40,7 @@ class DotnetSupport
       $dotnet_ver_items = explode('.', $dotnet_curr_ver);
       $target_ver_items = explode('.', $version);
       //let's force install if current major version is not equal 
-      $force = isset($dotnet_ver_items[0]) && $dotnet_ver_items[0] !== $target_ver_items[0];
+      $force = $dotnet_ver_items[0] !== $target_ver_items[0];
     }
 
     if(!$force)